diff --git a/app/assets/javascripts/blob/components/blob_header_default_actions.vue b/app/assets/javascripts/blob/components/blob_header_default_actions.vue
index daade611651..6eddec31166 100644
--- a/app/assets/javascripts/blob/components/blob_header_default_actions.vue
+++ b/app/assets/javascripts/blob/components/blob_header_default_actions.vue
@@ -32,6 +32,7 @@ export default {
       default: false,
     },
   },
+  inject: ['blobHash'],
   computed: {
     downloadUrl() {
       return `${this.rawPath}?inline=false`;
@@ -39,6 +40,9 @@ export default {
     copyDisabled() {
       return this.activeViewer === RICH_BLOB_VIEWER;
     },
+    getBlobHashTarget() {
+      return `[data-blob-hash="${this.blobHash}"]`;
+    },
   },
   BTN_COPY_CONTENTS_TITLE,
   BTN_DOWNLOAD_TITLE,
@@ -53,7 +57,7 @@ export default {
       :aria-label="$options.BTN_COPY_CONTENTS_TITLE"
       :title="$options.BTN_COPY_CONTENTS_TITLE"
       :disabled="copyDisabled"
-      data-clipboard-target="#blob-code-content"
+      :data-clipboard-target="getBlobHashTarget"
       data-testid="copyContentsButton"
       icon="copy-to-clipboard"
       category="primary"
diff --git a/app/assets/javascripts/boards/components/sidebar/board_sidebar_due_date.vue b/app/assets/javascripts/boards/components/sidebar/board_sidebar_due_date.vue
index 19e6f8a2269..6935ead2706 100644
--- a/app/assets/javascripts/boards/components/sidebar/board_sidebar_due_date.vue
+++ b/app/assets/javascripts/boards/components/sidebar/board_sidebar_due_date.vue
@@ -18,7 +18,7 @@ export default {
     };
   },
   computed: {
-    ...mapGetters({ issue: 'activeIssue' }),
+    ...mapGetters({ issue: 'activeIssue', projectPathForActiveIssue: 'projectPathForActiveIssue' }),
     hasDueDate() {
       return this.issue.dueDate != null;
     },
@@ -36,10 +36,6 @@ export default {
 
       return dateInWords(this.parsedDueDate, true);
     },
-    projectPath() {
-      const referencePath = this.issue.referencePath || '';
-      return referencePath.slice(0, referencePath.indexOf('#'));
-    },
   },
   methods: {
     ...mapActions(['setActiveIssueDueDate']),
@@ -53,7 +49,7 @@ export default {
 
       try {
         const dueDate = date ? formatDate(date, 'yyyy-mm-dd') : null;
-        await this.setActiveIssueDueDate({ dueDate, projectPath: this.projectPath });
+        await this.setActiveIssueDueDate({ dueDate, projectPath: this.projectPathForActiveIssue });
       } catch (e) {
         createFlash({ message: this.$options.i18n.updateDueDateError });
       } finally {
diff --git a/app/assets/javascripts/boards/components/sidebar/board_sidebar_labels_select.vue b/app/assets/javascripts/boards/components/sidebar/board_sidebar_labels_select.vue
index 31094939733..9d537a4ef2c 100644
--- a/app/assets/javascripts/boards/components/sidebar/board_sidebar_labels_select.vue
+++ b/app/assets/javascripts/boards/components/sidebar/board_sidebar_labels_select.vue
@@ -21,9 +21,9 @@ export default {
   },
   inject: ['labelsFetchPath', 'labelsManagePath', 'labelsFilterBasePath'],
   computed: {
-    ...mapGetters({ issue: 'activeIssue' }),
+    ...mapGetters(['activeIssue', 'projectPathForActiveIssue']),
     selectedLabels() {
-      const { labels = [] } = this.issue;
+      const { labels = [] } = this.activeIssue;
 
       return labels.map(label => ({
         ...label,
@@ -31,17 +31,13 @@ export default {
       }));
     },
     issueLabels() {
-      const { labels = [] } = this.issue;
+      const { labels = [] } = this.activeIssue;
 
       return labels.map(label => ({
         ...label,
         scoped: isScopedLabel(label),
       }));
     },
-    projectPath() {
-      const { referencePath = '' } = this.issue;
-      return referencePath.slice(0, referencePath.indexOf('#'));
-    },
   },
   methods: {
     ...mapActions(['setActiveIssueLabels']),
@@ -55,7 +51,7 @@ export default {
           .filter(label => !payload.find(selected => selected.id === label.id))
           .map(label => label.id);
 
-        const input = { addLabelIds, removeLabelIds, projectPath: this.projectPath };
+        const input = { addLabelIds, removeLabelIds, projectPath: this.projectPathForActiveIssue };
         await this.setActiveIssueLabels(input);
       } catch (e) {
         createFlash({ message: __('An error occurred while updating labels.') });
@@ -68,7 +64,7 @@ export default {
 
       try {
         const removeLabelIds = [getIdFromGraphQLId(id)];
-        const input = { removeLabelIds, projectPath: this.projectPath };
+        const input = { removeLabelIds, projectPath: this.projectPathForActiveIssue };
         await this.setActiveIssueLabels(input);
       } catch (e) {
         createFlash({ message: __('An error occurred when removing the label.') });
diff --git a/app/assets/javascripts/boards/components/sidebar/board_sidebar_subscription.vue b/app/assets/javascripts/boards/components/sidebar/board_sidebar_subscription.vue
new file mode 100644
index 00000000000..ed069cea630
--- /dev/null
+++ b/app/assets/javascripts/boards/components/sidebar/board_sidebar_subscription.vue
@@ -0,0 +1,71 @@
+<script>
+import { mapGetters, mapActions } from 'vuex';
+import { GlToggle } from '@gitlab/ui';
+import createFlash from '~/flash';
+import { __, s__ } from '~/locale';
+
+export default {
+  i18n: {
+    header: {
+      title: __('Notifications'),
+      /* Any change to subscribeDisabledDescription
+         must be reflected in app/helpers/notifications_helper.rb */
+      subscribeDisabledDescription: __(
+        'Notifications have been disabled by the project or group owner',
+      ),
+    },
+    updateSubscribedErrorMessage: s__(
+      'IssueBoards|An error occurred while setting notifications status.',
+    ),
+  },
+  components: {
+    GlToggle,
+  },
+  data() {
+    return {
+      loading: false,
+    };
+  },
+  computed: {
+    ...mapGetters(['activeIssue', 'projectPathForActiveIssue']),
+    notificationText() {
+      return this.activeIssue.emailsDisabled
+        ? this.$options.i18n.header.subscribeDisabledDescription
+        : this.$options.i18n.header.title;
+    },
+  },
+  methods: {
+    ...mapActions(['setActiveIssueSubscribed']),
+    async handleToggleSubscription() {
+      this.loading = true;
+
+      try {
+        await this.setActiveIssueSubscribed({
+          subscribed: !this.activeIssue.subscribed,
+          projectPath: this.projectPathForActiveIssue,
+        });
+      } catch (error) {
+        createFlash({ message: this.$options.i18n.updateSubscribedErrorMessage });
+      } finally {
+        this.loading = false;
+      }
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    class="gl-display-flex gl-align-items-center gl-justify-content-space-between"
+    data-testid="sidebar-notifications"
+  >
+    <span data-testid="notification-header-text"> {{ notificationText }} </span>
+    <gl-toggle
+      v-if="!activeIssue.emailsDisabled"
+      :value="activeIssue.subscribed"
+      :is-loading="loading"
+      data-testid="notification-subscribe-toggle"
+      @change="handleToggleSubscription"
+    />
+  </div>
+</template>
diff --git a/app/assets/javascripts/boards/graphql/mutations/issue_set_subscription.mutation.graphql b/app/assets/javascripts/boards/graphql/mutations/issue_set_subscription.mutation.graphql
new file mode 100644
index 00000000000..1f383245ac2
--- /dev/null
+++ b/app/assets/javascripts/boards/graphql/mutations/issue_set_subscription.mutation.graphql
@@ -0,0 +1,8 @@
+mutation issueSetSubscription($input: IssueSetSubscriptionInput!) {
+  issueSetSubscription(input: $input) {
+    issue {
+      subscribed
+    }
+    errors
+  }
+}
diff --git a/app/assets/javascripts/boards/stores/actions.js b/app/assets/javascripts/boards/stores/actions.js
index 2552a3a4113..dd950a45076 100644
--- a/app/assets/javascripts/boards/stores/actions.js
+++ b/app/assets/javascripts/boards/stores/actions.js
@@ -24,6 +24,7 @@ import destroyBoardListMutation from '../queries/board_list_destroy.mutation.gra
 import issueCreateMutation from '../queries/issue_create.mutation.graphql';
 import issueSetLabels from '../queries/issue_set_labels.mutation.graphql';
 import issueSetDueDate from '../queries/issue_set_due_date.mutation.graphql';
+import issueSetSubscriptionMutation from '../graphql/mutations/issue_set_subscription.mutation.graphql';
 
 const notImplemented = () => {
   /* eslint-disable-next-line @gitlab/require-i18n-strings */
@@ -423,6 +424,29 @@ export default {
     });
   },
 
+  setActiveIssueSubscribed: async ({ commit, getters }, input) => {
+    const { data } = await gqlClient.mutate({
+      mutation: issueSetSubscriptionMutation,
+      variables: {
+        input: {
+          iid: String(getters.activeIssue.iid),
+          projectPath: input.projectPath,
+          subscribedState: input.subscribed,
+        },
+      },
+    });
+
+    if (data.issueSetSubscription?.errors?.length > 0) {
+      throw new Error(data.issueSetSubscription.errors);
+    }
+
+    commit(types.UPDATE_ISSUE_BY_ID, {
+      issueId: getters.activeIssue.id,
+      prop: 'subscribed',
+      value: data.issueSetSubscription.issue.subscribed,
+    });
+  },
+
   fetchBacklog: () => {
     notImplemented();
   },
diff --git a/app/assets/javascripts/boards/stores/getters.js b/app/assets/javascripts/boards/stores/getters.js
index f717b4101ab..cd28b4a0ff7 100644
--- a/app/assets/javascripts/boards/stores/getters.js
+++ b/app/assets/javascripts/boards/stores/getters.js
@@ -24,6 +24,11 @@ export default {
     return state.issues[state.activeId] || {};
   },
 
+  projectPathForActiveIssue: (_, getters) => {
+    const referencePath = getters.activeIssue.referencePath || '';
+    return referencePath.slice(0, referencePath.indexOf('#'));
+  },
+
   getListByLabelId: state => labelId => {
     return find(state.boardLists, l => l.label?.id === labelId);
   },
diff --git a/app/assets/javascripts/persistent_user_callouts.js b/app/assets/javascripts/persistent_user_callouts.js
index ef4d5338046..8c5f45e9d34 100644
--- a/app/assets/javascripts/persistent_user_callouts.js
+++ b/app/assets/javascripts/persistent_user_callouts.js
@@ -6,6 +6,7 @@ const PERSISTENT_USER_CALLOUTS = [
   '.js-admin-licensed-user-count-threshold',
   '.js-buy-pipeline-minutes-notification-callout',
   '.js-token-expiry-callout',
+  '.js-registration-enabled-callout',
 ];
 
 const initCallouts = () => {
diff --git a/app/assets/javascripts/snippets/components/snippet_blob_view.vue b/app/assets/javascripts/snippets/components/snippet_blob_view.vue
index 8e817fdbe31..b965c15306d 100644
--- a/app/assets/javascripts/snippets/components/snippet_blob_view.vue
+++ b/app/assets/javascripts/snippets/components/snippet_blob_view.vue
@@ -51,6 +51,13 @@ export default {
       required: true,
     },
   },
+  provide() {
+    return {
+      blobHash: Math.random()
+        .toString()
+        .split('.')[1],
+    };
+  },
   data() {
     return {
       blobContent: '',
diff --git a/app/assets/javascripts/vue_shared/components/blob_viewers/simple_viewer.vue b/app/assets/javascripts/vue_shared/components/blob_viewers/simple_viewer.vue
index bbe72a2b122..646e1703f1e 100644
--- a/app/assets/javascripts/vue_shared/components/blob_viewers/simple_viewer.vue
+++ b/app/assets/javascripts/vue_shared/components/blob_viewers/simple_viewer.vue
@@ -9,6 +9,7 @@ export default {
     GlIcon,
   },
   mixins: [ViewerMixin],
+  inject: ['blobHash'],
   data() {
     return {
       highlightedLine: null,
@@ -64,7 +65,7 @@ export default {
       </a>
     </div>
     <div class="blob-content">
-      <pre class="code highlight"><code id="blob-code-content" v-html="content"></code></pre>
+      <pre class="code highlight"><code :data-blob-hash="blobHash" v-html="content"></code></pre>
     </div>
   </div>
 </template>
diff --git a/app/helpers/application_settings_helper.rb b/app/helpers/application_settings_helper.rb
index f566f145aed..512649b3008 100644
--- a/app/helpers/application_settings_helper.rb
+++ b/app/helpers/application_settings_helper.rb
@@ -394,6 +394,10 @@ module ApplicationSettingsHelper
   def show_documentation_base_url_field?
     Feature.enabled?(:help_page_documentation_redirect)
   end
+
+  def signup_enabled?
+    !!Gitlab::CurrentSettings.signup_enabled
+  end
 end
 
 ApplicationSettingsHelper.prepend_if_ee('EE::ApplicationSettingsHelper')
diff --git a/app/helpers/notifications_helper.rb b/app/helpers/notifications_helper.rb
index 542a9ad2a70..61fcda6a504 100644
--- a/app/helpers/notifications_helper.rb
+++ b/app/helpers/notifications_helper.rb
@@ -67,6 +67,7 @@ module NotificationsHelper
     when :custom
       _('You will only receive notifications for the events you choose')
     when :owner_disabled
+      # Any change must be reflected in board_sidebar_subscription.vue
       _('Notifications have been disabled by the project or group owner')
     end
   end
diff --git a/app/helpers/user_callouts_helper.rb b/app/helpers/user_callouts_helper.rb
index 0cdf53d6174..e93c1b82cd7 100644
--- a/app/helpers/user_callouts_helper.rb
+++ b/app/helpers/user_callouts_helper.rb
@@ -10,6 +10,7 @@ module UserCalloutsHelper
   WEBHOOKS_MOVED = 'webhooks_moved'
   CUSTOMIZE_HOMEPAGE = 'customize_homepage'
   FEATURE_FLAGS_NEW_VERSION = 'feature_flags_new_version'
+  REGISTRATION_ENABLED_CALLOUT = 'registration_enabled_callout'
 
   def show_admin_integrations_moved?
     !user_dismissed?(ADMIN_INTEGRATIONS_MOVED)
@@ -55,6 +56,10 @@ module UserCalloutsHelper
     !user_dismissed?(FEATURE_FLAGS_NEW_VERSION)
   end
 
+  def show_registration_enabled_user_callout?
+    current_user&.admin? && signup_enabled? && !user_dismissed?(REGISTRATION_ENABLED_CALLOUT)
+  end
+
   private
 
   def user_dismissed?(feature_name, ignore_dismissal_earlier_than = nil)
diff --git a/app/models/ci/build_trace_chunk.rb b/app/models/ci/build_trace_chunk.rb
index 1fb8e74269d..ceefb6a8b8a 100644
--- a/app/models/ci/build_trace_chunk.rb
+++ b/app/models/ci/build_trace_chunk.rb
@@ -105,7 +105,7 @@ module Ci
       raise ArgumentError, 'Offset is out of range' if offset < 0 || offset > size
       raise ArgumentError, 'Chunk size overflow' if CHUNK_SIZE < (offset + new_data.bytesize)
 
-      in_lock(*lock_params) { unsafe_append_data!(new_data, offset) }
+      in_lock(lock_key, **lock_params) { unsafe_append_data!(new_data, offset) }
 
       schedule_to_persist! if full?
     end
@@ -151,7 +151,7 @@ module Ci
     # acquired
     #
     def persist_data!
-      in_lock(*lock_params) do         # exclusive Redis lock is acquired first
+      in_lock(lock_key, **lock_params) do # exclusive Redis lock is acquired first
         raise FailedToPersistDataError, 'Modifed build trace chunk detected' if has_changes_to_save?
 
         self.reset.then do |chunk|     # we ensure having latest lock_version
@@ -289,11 +289,16 @@ module Ci
       build.trace_chunks.maximum(:chunk_index).to_i
     end
 
+    def lock_key
+      "trace_write:#{build_id}:chunks:#{chunk_index}"
+    end
+
     def lock_params
-      ["trace_write:#{build_id}:chunks:#{chunk_index}",
-       { ttl: WRITE_LOCK_TTL,
-         retries: WRITE_LOCK_RETRY,
-         sleep_sec: WRITE_LOCK_SLEEP }]
+      {
+        ttl: WRITE_LOCK_TTL,
+        retries: WRITE_LOCK_RETRY,
+        sleep_sec: WRITE_LOCK_SLEEP
+      }
     end
 
     def metrics
diff --git a/app/models/user_callout.rb b/app/models/user_callout.rb
index e39ff8712fc..cfad58fc0db 100644
--- a/app/models/user_callout.rb
+++ b/app/models/user_callout.rb
@@ -25,7 +25,8 @@ class UserCallout < ApplicationRecord
     personal_access_token_expiry: 21,          # EE-only
     suggest_pipeline: 22,
     customize_homepage: 23,
-    feature_flags_new_version: 24
+    feature_flags_new_version: 24,
+    registration_enabled_callout: 25
   }
 
   validates :user, presence: true
diff --git a/app/services/merge_requests/cleanup_refs_service.rb b/app/services/merge_requests/cleanup_refs_service.rb
index 92d5d96b7f7..23ac8e393f4 100644
--- a/app/services/merge_requests/cleanup_refs_service.rb
+++ b/app/services/merge_requests/cleanup_refs_service.rb
@@ -31,7 +31,7 @@ module MergeRequests
       return error('Failed to create keep around refs.') unless kept_around?
       return error('Failed to cache merge ref sha.') unless cache_merge_ref_sha
 
-      delete_refs
+      delete_refs if repository.exists?
 
       return error('Failed to update schedule.') unless update_schedule
 
diff --git a/app/services/merge_requests/reopen_service.rb b/app/services/merge_requests/reopen_service.rb
index 1d4a6249952..bcedbc61c65 100644
--- a/app/services/merge_requests/reopen_service.rb
+++ b/app/services/merge_requests/reopen_service.rb
@@ -16,6 +16,7 @@ module MergeRequests
         merge_request.update_project_counter_caches
         merge_request.cache_merge_request_closes_issues!(current_user)
         merge_request.cleanup_schedule&.destroy
+        merge_request.update_column(:merge_ref_sha, nil)
       end
 
       merge_request
diff --git a/app/views/admin/projects/show.html.haml b/app/views/admin/projects/show.html.haml
index 1d08f59838d..aae1d5b6a4e 100644
--- a/app/views/admin/projects/show.html.haml
+++ b/app/views/admin/projects/show.html.haml
@@ -14,7 +14,7 @@
 - if @project.last_repository_check_failed?
   .row
     .col-md-12
-      .gl-alert.gl-alert-danger.gl-mb-5
+      .gl-alert.gl-alert-danger.gl-mb-5{ data: { testid: 'last-repository-check-failed-alert' } }
         = sprite_icon('error', size: 16, css_class: 'gl-icon gl-alert-icon gl-alert-icon-no-title')
         .gl-alert-body
           - last_check_message = _("Last repository check (%{last_check_timestamp}) failed. See the 'repocheck.log' file for error messages.")
diff --git a/app/views/layouts/_page.html.haml b/app/views/layouts/_page.html.haml
index 700255eaffd..f6fc49393d8 100644
--- a/app/views/layouts/_page.html.haml
+++ b/app/views/layouts/_page.html.haml
@@ -10,6 +10,7 @@
       = render_if_exists "layouts/header/token_expiry_notification"
       = render "layouts/broadcast"
       = render "layouts/header/read_only_banner"
+      = render "layouts/header/registration_enabled_callout"
       = render "layouts/nav/classification_level_banner"
       = yield :flash_message
       = render "shared/ping_consent"
diff --git a/app/views/layouts/header/_registration_enabled_callout.html.haml b/app/views/layouts/header/_registration_enabled_callout.html.haml
new file mode 100644
index 00000000000..1b1804edcc7
--- /dev/null
+++ b/app/views/layouts/header/_registration_enabled_callout.html.haml
@@ -0,0 +1,15 @@
+- return unless show_registration_enabled_user_callout?
+
+%div{ class: [container_class, @content_class, 'gl-pt-5!'] }
+  .gl-alert.gl-alert-warning.js-registration-enabled-callout{ role: 'alert', data: { feature_id: UserCalloutsHelper::REGISTRATION_ENABLED_CALLOUT, dismiss_endpoint: user_callouts_path } }
+    = sprite_icon('warning', size: 16, css_class: 'gl-alert-icon')
+    %button.gl-alert-dismiss.js-close{ type: 'button', aria: { label: _('Close') }, data: { testid: 'close-registration-enabled-callout' } }
+      = sprite_icon('close', size: 16)
+    .gl-alert-title
+      = _('Open registration is enabled on your instance.')
+    .gl-alert-body
+      = html_escape(_('%{anchorOpen}Learn more%{anchorClose} about how you can customize / disable registration on your instance.')) % { anchorOpen: "<a href=\"#{help_page_path('user/admin_area/settings/sign_up_restrictions')}\">".html_safe, anchorClose: '</a>'.html_safe }
+    .gl-alert-actions
+      = link_to general_admin_application_settings_path(anchor: 'js-signup-settings'), class: 'btn gl-alert-action btn-info btn-md gl-button' do
+        %span.gl-button-text
+          = _('View setting')
diff --git a/changelogs/unreleased/237905-add-signup-enabled-alert.yml b/changelogs/unreleased/237905-add-signup-enabled-alert.yml
new file mode 100644
index 00000000000..0e76ad97930
--- /dev/null
+++ b/changelogs/unreleased/237905-add-signup-enabled-alert.yml
@@ -0,0 +1,5 @@
+---
+title: Add user callout to alert admins that registration is open by default
+merge_request: 47425
+author:
+type: added
diff --git a/changelogs/unreleased/245263-fix-cleanup-service-no-repository.yml b/changelogs/unreleased/245263-fix-cleanup-service-no-repository.yml
new file mode 100644
index 00000000000..7bb7f8366f9
--- /dev/null
+++ b/changelogs/unreleased/245263-fix-cleanup-service-no-repository.yml
@@ -0,0 +1,5 @@
+---
+title: Do not fail when cleaning up MR with no repository
+merge_request: 47744
+author:
+type: fixed
diff --git a/changelogs/unreleased/dmishunov-276913-snippet-copy-content.yml b/changelogs/unreleased/dmishunov-276913-snippet-copy-content.yml
new file mode 100644
index 00000000000..78b586942bb
--- /dev/null
+++ b/changelogs/unreleased/dmishunov-276913-snippet-copy-content.yml
@@ -0,0 +1,5 @@
+---
+title: Fixed copy contents functionality for snippets
+merge_request: 47646
+author:
+type: fixed
diff --git a/changelogs/unreleased/pb-clear-merge-ref-sha-reopen.yml b/changelogs/unreleased/pb-clear-merge-ref-sha-reopen.yml
new file mode 100644
index 00000000000..78b1e723294
--- /dev/null
+++ b/changelogs/unreleased/pb-clear-merge-ref-sha-reopen.yml
@@ -0,0 +1,5 @@
+---
+title: Clear cached merge_ref_sha on reopen
+merge_request: 47747
+author:
+type: fixed
diff --git a/doc/development/database_review.md b/doc/development/database_review.md
index f5c03b9e8e6..d1ec32af464 100644
--- a/doc/development/database_review.md
+++ b/doc/development/database_review.md
@@ -106,7 +106,8 @@ test its execution using `CREATE INDEX CONCURRENTLY` in the `#database-lab` Slac
 
 - Write the raw SQL in the MR description. Preferably formatted
   nicely with [pgFormatter](https://sqlformat.darold.net) or
-  [paste.depesz.com](https://paste.depesz.com).
+  [paste.depesz.com](https://paste.depesz.com) and using regular quotes
+  (e.g. `"projects"."id"`) and avoiding smart quotes (e.g. `“projects”.“id”`).
 - Include the output of `EXPLAIN (ANALYZE, BUFFERS)` of the relevant
   queries in the description. If the output is too long, wrap it in
   `<details>` blocks, paste it in a GitLab Snippet, or provide the
diff --git a/doc/development/integrations/jira_connect.md b/doc/development/integrations/jira_connect.md
index 983e97082d9..66a93f8c947 100644
--- a/doc/development/integrations/jira_connect.md
+++ b/doc/development/integrations/jira_connect.md
@@ -4,34 +4,34 @@ group: Ecosystem
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 ---
 
-# Setting up a development environment
+# Set up a development environment
 
 The following are required to install and test the app:
 
-1. A Jira Cloud instance
+- A Jira Cloud instance. Atlassian provides [free instances for development and testing](https://developer.atlassian.com/platform/marketplace/getting-started/#free-developer-instances-to-build-and-test-your-app).
+- A GitLab instance available over the internet. For the app to work, Jira Cloud should
+  be able to connect to the GitLab instance through the internet. To easily expose your
+  local development environment, you can use tools like:
+  - [serveo](https://medium.com/automationmaster/how-to-forward-my-local-port-to-public-using-serveo-4979f352a3bf)
+  - [ngrok](https://ngrok.com).
 
-   Atlassian provides free instances for development and testing. [Click here to sign up](https://developer.atlassian.com/platform/marketplace/getting-started/#free-developer-instances-to-build-and-test-your-app).
+  These also take care of SSL for you because Jira requires all connections to the app
+  host to be over SSL.
 
-1. A GitLab instance available over the internet
+## Install the app in Jira
 
-   For the app to work, Jira Cloud should be able to connect to the GitLab instance through the internet.
+To install the app in Jira:
 
-   To easily expose your local development environment, you can use tools like
-   [serveo](https://medium.com/automationmaster/how-to-forward-my-local-port-to-public-using-serveo-4979f352a3bf)
-   or [ngrok](https://ngrok.com). These also take care of SSL for you because Jira
-   requires all connections to the app host to be over SSL.
+1. Enable Jira development mode to install apps that are not from the Atlassian
+   Marketplace:
 
-## Installing the app in Jira
-
-1. Enable Jira development mode to install apps that are not from the Atlassian Marketplace
-
-   1. Navigate to **Jira settings** (cog icon) > **Apps** > **Manage apps**.
+   1. In Jira, navigate to **Jira settings > Apps > Manage apps**.
    1. Scroll to the bottom of the **Manage apps** page and click **Settings**.
    1. Select **Enable development mode** and click **Apply**.
 
-1. Install the app
+1. Install the app:
 
-   1. Navigate to Jira, then choose **Jira settings** (cog icon) > **Apps** > **Manage apps**.
+   1. In Jira, navigate to **Jira settings > Apps > Manage apps**.
    1. Click **Upload app**.
    1. In the **From this URL** field, provide a link to the app descriptor. The host and port must point to your GitLab instance.
 
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 4adca92fb46..e1c37c9057b 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -356,6 +356,9 @@ msgstr ""
 msgid "%{address} is an invalid IP address range"
 msgstr ""
 
+msgid "%{anchorOpen}Learn more%{anchorClose} about how you can customize / disable registration on your instance."
+msgstr ""
+
 msgid "%{author_link} wrote:"
 msgstr ""
 
@@ -8410,9 +8413,6 @@ msgstr ""
 msgid "DastProfiles|Copy HTTP header to clipboard"
 msgstr ""
 
-msgid "DastProfiles|Could not create site validation token. Please refresh the page, or try again later."
-msgstr ""
-
 msgid "DastProfiles|Could not create the scanner profile. Please try again."
 msgstr ""
 
@@ -8437,9 +8437,6 @@ msgstr ""
 msgid "DastProfiles|Could not fetch site profiles. Please refresh the page, or try again later."
 msgstr ""
 
-msgid "DastProfiles|Could not retrieve site validation status. Please refresh the page, or try again later."
-msgstr ""
-
 msgid "DastProfiles|Could not update the scanner profile. Please try again."
 msgstr ""
 
@@ -8554,9 +8551,6 @@ msgstr ""
 msgid "DastProfiles|Site is not validated yet, please follow the steps."
 msgstr ""
 
-msgid "DastProfiles|Site must be validated to run an active scan."
-msgstr ""
-
 msgid "DastProfiles|Spider timeout"
 msgstr ""
 
@@ -8602,27 +8596,12 @@ msgstr ""
 msgid "DastProfiles|Validate"
 msgstr ""
 
-msgid "DastProfiles|Validate target site"
-msgstr ""
-
 msgid "DastProfiles|Validating..."
 msgstr ""
 
 msgid "DastProfiles|Validation failed, please make sure that you follow the steps above with the chosen method."
 msgstr ""
 
-msgid "DastProfiles|Validation failed. Please try again."
-msgstr ""
-
-msgid "DastProfiles|Validation is in progress..."
-msgstr ""
-
-msgid "DastProfiles|Validation must be turned off to change the target URL"
-msgstr ""
-
-msgid "DastProfiles|Validation succeeded. Both active and passive scans can be run against the target site."
-msgstr ""
-
 msgid "Data is still calculating..."
 msgstr ""
 
@@ -15098,6 +15077,9 @@ msgstr ""
 msgid "IssueAnalytics|Weight"
 msgstr ""
 
+msgid "IssueBoards|An error occurred while setting notifications status."
+msgstr ""
+
 msgid "IssueBoards|Board"
 msgstr ""
 
@@ -19068,6 +19050,9 @@ msgstr ""
 msgid "Open raw"
 msgstr ""
 
+msgid "Open registration is enabled on your instance."
+msgstr ""
+
 msgid "Open sidebar"
 msgstr ""
 
@@ -29895,6 +29880,9 @@ msgstr ""
 msgid "View replaced file @ "
 msgstr ""
 
+msgid "View setting"
+msgstr ""
+
 msgid "View supported languages and frameworks"
 msgstr ""
 
diff --git a/qa/qa/resource/file.rb b/qa/qa/resource/file.rb
index aaf0bc58ef7..0d2bf9890ea 100644
--- a/qa/qa/resource/file.rb
+++ b/qa/qa/resource/file.rb
@@ -5,10 +5,10 @@ module QA
     class File < Base
       attr_accessor :author_email,
                     :author_name,
-                    :branch,
                     :content,
                     :commit_message,
                     :name
+      attr_writer :branch
 
       attribute :project do
         Project.fabricate! do |resource|
@@ -29,6 +29,10 @@ module QA
         @commit_message = 'QA Test - Commit message'
       end
 
+      def branch
+        @branch ||= "master"
+      end
+
       def fabricate!
         project.visit!
 
@@ -42,12 +46,6 @@ module QA
         end
       end
 
-      def resource_web_url(resource)
-        super
-      rescue ResourceURLMissingError
-        # this particular resource does not expose a web_url property
-      end
-
       def api_get_path
         "/projects/#{CGI.escape(project.path_with_namespace)}/repository/files/#{CGI.escape(@name)}"
       end
@@ -58,13 +56,20 @@ module QA
 
       def api_post_body
         {
-          branch: @branch || "master",
+          branch: branch,
           author_email: @author_email || Runtime::User.default_email,
           author_name: @author_name || Runtime::User.username,
           content: content,
           commit_message: commit_message
         }
       end
+
+      private
+
+      def transform_api_resource(api_resource)
+        api_resource[:web_url] = "#{Runtime::Scenario.gitlab_address}/#{project.full_path}/-/tree/#{branch}/#{api_resource[:file_path]}"
+        api_resource
+      end
     end
   end
 end
diff --git a/qa/qa/specs/features/browser_ui/3_create/repository/create_edit_delete_file_via_web_spec.rb b/qa/qa/specs/features/browser_ui/3_create/repository/create_edit_delete_file_via_web_spec.rb
deleted file mode 100644
index 062dd815c52..00000000000
--- a/qa/qa/specs/features/browser_ui/3_create/repository/create_edit_delete_file_via_web_spec.rb
+++ /dev/null
@@ -1,68 +0,0 @@
-# frozen_string_literal: true
-
-module QA
-  RSpec.describe 'Create' do
-    describe 'Files management' do
-      it 'user creates, edits and deletes a file via the Web', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/451' do
-        Flow::Login.sign_in
-
-        # Create
-        file_name = 'QA Test - File name'
-        file_content = 'QA Test - File content'
-        commit_message_for_create = 'QA Test - Create new file'
-
-        Resource::File.fabricate_via_browser_ui! do |file|
-          file.name = file_name
-          file.content = file_content
-          file.commit_message = commit_message_for_create
-        end
-
-        Page::File::Show.perform do |file|
-          aggregate_failures 'file details' do
-            expect(file).to have_file(file_name)
-            expect(file).to have_file_content(file_content)
-            expect(file).to have_commit_message(commit_message_for_create)
-          end
-        end
-
-        # Edit
-        updated_file_content = 'QA Test - Updated file content'
-        commit_message_for_update = 'QA Test - Update file'
-
-        Page::File::Show.perform(&:click_edit)
-
-        Page::File::Form.perform do |file|
-          file.remove_content
-          file.add_content(updated_file_content)
-          file.add_commit_message(commit_message_for_update)
-          file.commit_changes
-        end
-
-        Page::File::Show.perform do |file|
-          aggregate_failures 'file details' do
-            expect(file).to have_notice('Your changes have been successfully committed.')
-            expect(file).to have_file_content(updated_file_content)
-            expect(file).to have_commit_message(commit_message_for_update)
-          end
-        end
-
-        # Delete
-        commit_message_for_delete = 'QA Test - Delete file'
-
-        Page::File::Show.perform do |file|
-          file.click_delete
-          file.add_commit_message(commit_message_for_delete)
-          file.click_delete_file
-        end
-
-        Page::Project::Show.perform do |project|
-          aggregate_failures 'file details' do
-            expect(project).to have_notice('The file has been successfully deleted.')
-            expect(project).to have_commit_message(commit_message_for_delete)
-            expect(project).not_to have_file(file_name)
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/qa/qa/specs/features/browser_ui/3_create/repository/file/create_file_via_web_spec.rb b/qa/qa/specs/features/browser_ui/3_create/repository/file/create_file_via_web_spec.rb
new file mode 100644
index 00000000000..cd333b3cea2
--- /dev/null
+++ b/qa/qa/specs/features/browser_ui/3_create/repository/file/create_file_via_web_spec.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create' do
+    context 'File management' do
+      file_name = 'QA Test - File name'
+      file_content = 'QA Test - File content'
+      commit_message_for_create = 'QA Test - Create new file'
+
+      before do
+        Flow::Login.sign_in
+      end
+
+      it 'user creates a file via the Web', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/1093' do
+        Resource::File.fabricate_via_browser_ui! do |file|
+          file.name = file_name
+          file.content = file_content
+          file.commit_message = commit_message_for_create
+        end
+
+        Page::File::Show.perform do |file|
+          aggregate_failures 'file details' do
+            expect(file).to have_file(file_name)
+            expect(file).to have_file_content(file_content)
+            expect(file).to have_commit_message(commit_message_for_create)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/qa/qa/specs/features/browser_ui/3_create/repository/file/delete_file_via_web_spec.rb b/qa/qa/specs/features/browser_ui/3_create/repository/file/delete_file_via_web_spec.rb
new file mode 100644
index 00000000000..903001aa4f0
--- /dev/null
+++ b/qa/qa/specs/features/browser_ui/3_create/repository/file/delete_file_via_web_spec.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create' do
+    context 'File management' do
+      let(:file) { Resource::File.fabricate_via_api! }
+
+      commit_message_for_delete = 'QA Test - Delete file'
+
+      before do
+        Flow::Login.sign_in
+        file.visit!
+      end
+
+      it 'user deletes a file via the Web', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/1095' do
+        Page::File::Show.perform do |file|
+          file.click_delete
+          file.add_commit_message(commit_message_for_delete)
+          file.click_delete_file
+        end
+
+        Page::Project::Show.perform do |project|
+          aggregate_failures 'file details' do
+            expect(project).to have_notice('The file has been successfully deleted.')
+            expect(project).to have_commit_message(commit_message_for_delete)
+            expect(project).not_to have_file(file.name)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/qa/qa/specs/features/browser_ui/3_create/repository/file/edit_file_via_web_spec.rb b/qa/qa/specs/features/browser_ui/3_create/repository/file/edit_file_via_web_spec.rb
new file mode 100644
index 00000000000..0da774b557f
--- /dev/null
+++ b/qa/qa/specs/features/browser_ui/3_create/repository/file/edit_file_via_web_spec.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create' do
+    context 'File management' do
+      let(:file) { Resource::File.fabricate_via_api! }
+
+      updated_file_content = 'QA Test - Updated file content'
+      commit_message_for_update = 'QA Test - Update file'
+
+      before do
+        Flow::Login.sign_in
+        file.visit!
+      end
+
+      it 'user edits a file via the Web', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/1094' do
+        Page::File::Show.perform(&:click_edit)
+
+        Page::File::Form.perform do |file|
+          file.remove_content
+          file.add_content(updated_file_content)
+          file.add_commit_message(commit_message_for_update)
+          file.commit_changes
+        end
+
+        Page::File::Show.perform do |file|
+          aggregate_failures 'file details' do
+            expect(file).to have_notice('Your changes have been successfully committed.')
+            expect(file).to have_file_content(updated_file_content)
+            expect(file).to have_commit_message(commit_message_for_update)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/spec/features/admin/admin_uses_repository_checks_spec.rb b/spec/features/admin/admin_uses_repository_checks_spec.rb
index 44642983a36..0fb5124f673 100644
--- a/spec/features/admin/admin_uses_repository_checks_spec.rb
+++ b/spec/features/admin/admin_uses_repository_checks_spec.rb
@@ -46,7 +46,7 @@ RSpec.describe 'Admin uses repository checks', :request_store, :clean_gitlab_red
       )
       visit_admin_project_page(project)
 
-      page.within('.gl-alert') do
+      page.within('[data-testid="last-repository-check-failed-alert"]') do
         expect(page.text).to match(/Last repository check \(just now\) failed/)
       end
     end
diff --git a/spec/features/callouts/registration_enabled_spec.rb b/spec/features/callouts/registration_enabled_spec.rb
new file mode 100644
index 00000000000..4055965273f
--- /dev/null
+++ b/spec/features/callouts/registration_enabled_spec.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Registration enabled callout' do
+  let_it_be(:admin) { create(:admin) }
+  let_it_be(:non_admin) { create(:user) }
+
+  context 'when "Sign-up enabled" setting is `true`' do
+    before do
+      stub_application_setting(signup_enabled: true)
+    end
+
+    context 'when an admin is logged in' do
+      before do
+        sign_in(admin)
+        visit root_dashboard_path
+      end
+
+      it 'displays callout' do
+        expect(page).to have_content 'Open registration is enabled on your instance.'
+        expect(page).to have_link 'View setting', href: general_admin_application_settings_path(anchor: 'js-signup-settings')
+      end
+
+      context 'when callout is dismissed', :js do
+        before do
+          find('[data-testid="close-registration-enabled-callout"]').click
+
+          visit root_dashboard_path
+        end
+
+        it 'does not display callout' do
+          expect(page).not_to have_content 'Open registration is enabled on your instance.'
+        end
+      end
+    end
+
+    context 'when a non-admin is logged in' do
+      before do
+        sign_in(non_admin)
+        visit root_dashboard_path
+      end
+
+      it 'does not display callout' do
+        expect(page).not_to have_content 'Open registration is enabled on your instance.'
+      end
+    end
+  end
+end
diff --git a/spec/frontend/blob/components/blob_header_default_actions_spec.js b/spec/frontend/blob/components/blob_header_default_actions_spec.js
index 590e36b16af..e2c73a5d5d9 100644
--- a/spec/frontend/blob/components/blob_header_default_actions_spec.js
+++ b/spec/frontend/blob/components/blob_header_default_actions_spec.js
@@ -14,8 +14,13 @@ describe('Blob Header Default Actions', () => {
   let btnGroup;
   let buttons;
 
+  const blobHash = 'foo-bar';
+
   function createComponent(propsData = {}) {
     wrapper = mount(BlobHeaderActions, {
+      provide: {
+        blobHash,
+      },
       propsData: {
         rawPath: Blob.rawPath,
         ...propsData,
diff --git a/spec/frontend/blob/components/blob_header_spec.js b/spec/frontend/blob/components/blob_header_spec.js
index 01d4bf834d2..3e84347bee4 100644
--- a/spec/frontend/blob/components/blob_header_spec.js
+++ b/spec/frontend/blob/components/blob_header_spec.js
@@ -11,7 +11,11 @@ describe('Blob Header Default Actions', () => {
 
   function createComponent(blobProps = {}, options = {}, propsData = {}, shouldMount = false) {
     const method = shouldMount ? mount : shallowMount;
+    const blobHash = 'foo-bar';
     wrapper = method.call(this, BlobHeader, {
+      provide: {
+        blobHash,
+      },
       propsData: {
         blob: { ...Blob, ...blobProps },
         ...propsData,
diff --git a/spec/frontend/boards/components/sidebar/board_sidebar_subscription_spec.js b/spec/frontend/boards/components/sidebar/board_sidebar_subscription_spec.js
new file mode 100644
index 00000000000..ee54c662167
--- /dev/null
+++ b/spec/frontend/boards/components/sidebar/board_sidebar_subscription_spec.js
@@ -0,0 +1,157 @@
+import Vuex from 'vuex';
+import { mount, createLocalVue } from '@vue/test-utils';
+import { GlToggle, GlLoadingIcon } from '@gitlab/ui';
+import BoardSidebarSubscription from '~/boards/components/sidebar/board_sidebar_subscription.vue';
+import * as types from '~/boards/stores/mutation_types';
+import { createStore } from '~/boards/stores';
+import { mockActiveIssue } from '../../mock_data';
+import createFlash from '~/flash';
+
+jest.mock('~/flash.js');
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('~/boards/components/sidebar/board_sidebar_subscription_spec.vue', () => {
+  let wrapper;
+  let store;
+
+  const findNotificationHeader = () => wrapper.find("[data-testid='notification-header-text']");
+  const findToggle = () => wrapper.find(GlToggle);
+  const findGlLoadingIcon = () => wrapper.find(GlLoadingIcon);
+
+  const createComponent = (activeIssue = { ...mockActiveIssue }) => {
+    store = createStore();
+    store.state.issues = { [activeIssue.id]: activeIssue };
+    store.state.activeId = activeIssue.id;
+
+    wrapper = mount(BoardSidebarSubscription, {
+      localVue,
+      store,
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+    store = null;
+    jest.clearAllMocks();
+  });
+
+  describe('Board sidebar subscription component template', () => {
+    it('displays "notifications" heading', () => {
+      createComponent();
+
+      expect(findNotificationHeader().text()).toBe('Notifications');
+    });
+
+    it('renders toggle as "off" when currently not subscribed', () => {
+      createComponent();
+
+      expect(findToggle().exists()).toBe(true);
+      expect(findToggle().props('value')).toBe(false);
+    });
+
+    it('renders toggle as "on" when currently subscribed', () => {
+      createComponent({
+        ...mockActiveIssue,
+        subscribed: true,
+      });
+
+      expect(findToggle().exists()).toBe(true);
+      expect(findToggle().props('value')).toBe(true);
+    });
+
+    describe('when notification emails have been disabled', () => {
+      beforeEach(() => {
+        createComponent({
+          ...mockActiveIssue,
+          emailsDisabled: true,
+        });
+      });
+
+      it('displays a message that notification have been disabled', () => {
+        expect(findNotificationHeader().text()).toBe(
+          'Notifications have been disabled by the project or group owner',
+        );
+      });
+
+      it('does not render the toggle button', () => {
+        expect(findToggle().exists()).toBe(false);
+      });
+    });
+  });
+
+  describe('Board sidebar subscription component `behavior`', () => {
+    const mockSetActiveIssueSubscribed = subscribedState => {
+      jest.spyOn(wrapper.vm, 'setActiveIssueSubscribed').mockImplementation(async () => {
+        store.commit(types.UPDATE_ISSUE_BY_ID, {
+          issueId: mockActiveIssue.id,
+          prop: 'subscribed',
+          value: subscribedState,
+        });
+      });
+    };
+
+    it('subscribing to notification', async () => {
+      createComponent();
+      mockSetActiveIssueSubscribed(true);
+
+      expect(findGlLoadingIcon().exists()).toBe(false);
+
+      findToggle().trigger('click');
+
+      await wrapper.vm.$nextTick();
+
+      expect(findGlLoadingIcon().exists()).toBe(true);
+      expect(wrapper.vm.setActiveIssueSubscribed).toHaveBeenCalledWith({
+        subscribed: true,
+        projectPath: 'gitlab-org/test-subgroup/gitlab-test',
+      });
+
+      await wrapper.vm.$nextTick();
+
+      expect(findGlLoadingIcon().exists()).toBe(false);
+      expect(findToggle().props('value')).toBe(true);
+    });
+
+    it('unsubscribing from notification', async () => {
+      createComponent({
+        ...mockActiveIssue,
+        subscribed: true,
+      });
+      mockSetActiveIssueSubscribed(false);
+
+      expect(findGlLoadingIcon().exists()).toBe(false);
+
+      findToggle().trigger('click');
+
+      await wrapper.vm.$nextTick();
+
+      expect(wrapper.vm.setActiveIssueSubscribed).toHaveBeenCalledWith({
+        subscribed: false,
+        projectPath: 'gitlab-org/test-subgroup/gitlab-test',
+      });
+      expect(findGlLoadingIcon().exists()).toBe(true);
+
+      await wrapper.vm.$nextTick();
+
+      expect(findGlLoadingIcon().exists()).toBe(false);
+      expect(findToggle().props('value')).toBe(false);
+    });
+
+    it('flashes an error message when setting the subscribed state fails', async () => {
+      createComponent();
+      jest.spyOn(wrapper.vm, 'setActiveIssueSubscribed').mockImplementation(async () => {
+        throw new Error();
+      });
+
+      findToggle().trigger('click');
+
+      await wrapper.vm.$nextTick();
+      expect(createFlash).toHaveBeenNthCalledWith(1, {
+        message: wrapper.vm.$options.i18n.updateSubscribedErrorMessage,
+      });
+    });
+  });
+});
diff --git a/spec/frontend/boards/mock_data.js b/spec/frontend/boards/mock_data.js
index fbca9e5b219..58f67231d55 100644
--- a/spec/frontend/boards/mock_data.js
+++ b/spec/frontend/boards/mock_data.js
@@ -176,6 +176,14 @@ export const mockIssue = {
   },
 };
 
+export const mockActiveIssue = {
+  ...mockIssue,
+  id: 436,
+  iid: '27',
+  subscribed: false,
+  emailsDisabled: false,
+};
+
 export const mockIssueWithModel = new ListIssue(mockIssue);
 
 export const mockIssue2 = {
diff --git a/spec/frontend/boards/stores/actions_spec.js b/spec/frontend/boards/stores/actions_spec.js
index f5eb0cb8474..4d529580a7a 100644
--- a/spec/frontend/boards/stores/actions_spec.js
+++ b/spec/frontend/boards/stores/actions_spec.js
@@ -9,6 +9,7 @@ import {
   rawIssue,
   mockIssues,
   labels,
+  mockActiveIssue,
 } from '../mock_data';
 import actions, { gqlClient } from '~/boards/stores/actions';
 import * as types from '~/boards/stores/mutation_types';
@@ -833,6 +834,57 @@ describe('setActiveIssueDueDate', () => {
   });
 });
 
+describe('setActiveIssueSubscribed', () => {
+  const state = { issues: { [mockActiveIssue.id]: mockActiveIssue } };
+  const getters = { activeIssue: mockActiveIssue };
+  const subscribedState = true;
+  const input = {
+    subscribedState,
+    projectPath: 'gitlab-org/gitlab-test',
+  };
+
+  it('should commit subscribed status', done => {
+    jest.spyOn(gqlClient, 'mutate').mockResolvedValue({
+      data: {
+        issueSetSubscription: {
+          issue: {
+            subscribed: subscribedState,
+          },
+          errors: [],
+        },
+      },
+    });
+
+    const payload = {
+      issueId: getters.activeIssue.id,
+      prop: 'subscribed',
+      value: subscribedState,
+    };
+
+    testAction(
+      actions.setActiveIssueSubscribed,
+      input,
+      { ...state, ...getters },
+      [
+        {
+          type: types.UPDATE_ISSUE_BY_ID,
+          payload,
+        },
+      ],
+      [],
+      done,
+    );
+  });
+
+  it('throws error if fails', async () => {
+    jest
+      .spyOn(gqlClient, 'mutate')
+      .mockResolvedValue({ data: { issueSetSubscription: { errors: ['failed mutation'] } } });
+
+    await expect(actions.setActiveIssueSubscribed({ getters }, input)).rejects.toThrow(Error);
+  });
+});
+
 describe('fetchBacklog', () => {
   expectNotImplemented(actions.fetchBacklog);
 });
diff --git a/spec/frontend/boards/stores/getters_spec.js b/spec/frontend/boards/stores/getters_spec.js
index 66c26d087bb..64025726dd1 100644
--- a/spec/frontend/boards/stores/getters_spec.js
+++ b/spec/frontend/boards/stores/getters_spec.js
@@ -124,6 +124,22 @@ describe('Boards - Getters', () => {
     });
   });
 
+  describe('projectPathByIssueId', () => {
+    it('returns project path for the active issue', () => {
+      const mockActiveIssue = {
+        referencePath: 'gitlab-org/gitlab-test#1',
+      };
+      expect(getters.projectPathForActiveIssue({}, { activeIssue: mockActiveIssue })).toEqual(
+        'gitlab-org/gitlab-test',
+      );
+    });
+
+    it('returns empty string as project when active issue is an empty object', () => {
+      const mockActiveIssue = {};
+      expect(getters.projectPathForActiveIssue({}, { activeIssue: mockActiveIssue })).toEqual('');
+    });
+  });
+
   describe('getIssuesByList', () => {
     const boardsState = {
       issuesByListId: mockIssuesByListId,
diff --git a/spec/frontend/vue_shared/components/blob_viewers/__snapshots__/simple_viewer_spec.js.snap b/spec/frontend/vue_shared/components/blob_viewers/__snapshots__/simple_viewer_spec.js.snap
index 4909d2d4226..023895099b1 100644
--- a/spec/frontend/vue_shared/components/blob_viewers/__snapshots__/simple_viewer_spec.js.snap
+++ b/spec/frontend/vue_shared/components/blob_viewers/__snapshots__/simple_viewer_spec.js.snap
@@ -59,7 +59,7 @@ exports[`Blob Simple Viewer component rendering matches the snapshot 1`] = `
       class="code highlight"
     >
       <code
-        id="blob-code-content"
+        data-blob-hash="foo-bar"
       >
         <span
           id="LC1"
diff --git a/spec/frontend/vue_shared/components/blob_viewers/simple_viewer_spec.js b/spec/frontend/vue_shared/components/blob_viewers/simple_viewer_spec.js
index 79195aa1350..8434fdaccde 100644
--- a/spec/frontend/vue_shared/components/blob_viewers/simple_viewer_spec.js
+++ b/spec/frontend/vue_shared/components/blob_viewers/simple_viewer_spec.js
@@ -5,9 +5,13 @@ import { HIGHLIGHT_CLASS_NAME } from '~/vue_shared/components/blob_viewers/const
 describe('Blob Simple Viewer component', () => {
   let wrapper;
   const contentMock = `<span id="LC1">First</span>\n<span id="LC2">Second</span>\n<span id="LC3">Third</span>`;
+  const blobHash = 'foo-bar';
 
   function createComponent(content = contentMock) {
     wrapper = shallowMount(SimpleViewer, {
+      provide: {
+        blobHash,
+      },
       propsData: {
         content,
         type: 'text',
diff --git a/spec/helpers/application_settings_helper_spec.rb b/spec/helpers/application_settings_helper_spec.rb
index 7f25721801f..479e2d7ef9d 100644
--- a/spec/helpers/application_settings_helper_spec.rb
+++ b/spec/helpers/application_settings_helper_spec.rb
@@ -166,4 +166,32 @@ RSpec.describe ApplicationSettingsHelper do
       it { is_expected.to eq(false) }
     end
   end
+
+  describe '.signup_enabled?' do
+    subject { helper.signup_enabled? }
+
+    context 'when signup is enabled' do
+      before do
+        stub_application_setting(signup_enabled: true)
+      end
+
+      it { is_expected.to be true }
+    end
+
+    context 'when signup is disabled' do
+      before do
+        stub_application_setting(signup_enabled: false)
+      end
+
+      it { is_expected.to be false }
+    end
+
+    context 'when `signup_enabled` is nil' do
+      before do
+        stub_application_setting(signup_enabled: nil)
+      end
+
+      it { is_expected.to be false }
+    end
+  end
 end
diff --git a/spec/helpers/user_callouts_helper_spec.rb b/spec/helpers/user_callouts_helper_spec.rb
index bcb0b5c51e7..4ab3be877b4 100644
--- a/spec/helpers/user_callouts_helper_spec.rb
+++ b/spec/helpers/user_callouts_helper_spec.rb
@@ -161,4 +161,50 @@ RSpec.describe UserCalloutsHelper do
       it { is_expected.to be_falsy }
     end
   end
+
+  describe '.show_registration_enabled_user_callout?' do
+    let_it_be(:admin) { create(:user, :admin) }
+
+    subject { helper.show_registration_enabled_user_callout? }
+
+    context 'when `current_user` is not an admin' do
+      before do
+        allow(helper).to receive(:current_user).and_return(user)
+        stub_application_setting(signup_enabled: true)
+        allow(helper).to receive(:user_dismissed?).with(described_class::REGISTRATION_ENABLED_CALLOUT) { false }
+      end
+
+      it { is_expected.to be false }
+    end
+
+    context 'when signup is disabled' do
+      before do
+        allow(helper).to receive(:current_user).and_return(admin)
+        stub_application_setting(signup_enabled: false)
+        allow(helper).to receive(:user_dismissed?).with(described_class::REGISTRATION_ENABLED_CALLOUT) { false }
+      end
+
+      it { is_expected.to be false }
+    end
+
+    context 'when user has dismissed callout' do
+      before do
+        allow(helper).to receive(:current_user).and_return(admin)
+        stub_application_setting(signup_enabled: true)
+        allow(helper).to receive(:user_dismissed?).with(described_class::REGISTRATION_ENABLED_CALLOUT) { true }
+      end
+
+      it { is_expected.to be false }
+    end
+
+    context 'when `current_user` is an admin, signup is enabled, and user has not dismissed callout' do
+      before do
+        allow(helper).to receive(:current_user).and_return(admin)
+        stub_application_setting(signup_enabled: true)
+        allow(helper).to receive(:user_dismissed?).with(described_class::REGISTRATION_ENABLED_CALLOUT) { false }
+      end
+
+      it { is_expected.to be true }
+    end
+  end
 end
diff --git a/spec/services/merge_requests/cleanup_refs_service_spec.rb b/spec/services/merge_requests/cleanup_refs_service_spec.rb
index 70acb50bb29..38c0e204e54 100644
--- a/spec/services/merge_requests/cleanup_refs_service_spec.rb
+++ b/spec/services/merge_requests/cleanup_refs_service_spec.rb
@@ -115,6 +115,19 @@ RSpec.describe MergeRequests::CleanupRefsService do
 
         it_behaves_like 'service that does not clean up merge request refs'
       end
+
+      context 'when repository no longer exists' do
+        before do
+          Repositories::DestroyService.new(merge_request.project.repository).execute
+        end
+
+        it 'does not fail and still mark schedule as complete' do
+          aggregate_failures do
+            expect(result[:status]).to eq(:success)
+            expect(merge_request.cleanup_schedule.completed_at).to be_present
+          end
+        end
+      end
     end
 
     shared_examples_for 'service that does not clean up merge request refs' do
diff --git a/spec/services/merge_requests/reopen_service_spec.rb b/spec/services/merge_requests/reopen_service_spec.rb
index bf8ceaf08d4..2bd83dc36a8 100644
--- a/spec/services/merge_requests/reopen_service_spec.rb
+++ b/spec/services/merge_requests/reopen_service_spec.rb
@@ -24,6 +24,7 @@ RSpec.describe MergeRequests::ReopenService do
       before do
         allow(service).to receive(:execute_hooks)
         merge_request.create_cleanup_schedule(scheduled_at: Time.current)
+        merge_request.update_column(:merge_ref_sha, 'abc123')
 
         perform_enqueued_jobs do
           service.execute(merge_request)
@@ -48,6 +49,10 @@ RSpec.describe MergeRequests::ReopenService do
         expect(merge_request.reload.cleanup_schedule).to be_nil
       end
 
+      it 'clears the cached merge_ref_sha' do
+        expect(merge_request.reload.merge_ref_sha).to be_nil
+      end
+
       context 'note creation' do
         it 'creates resource state event about merge_request reopen' do
           event = merge_request.resource_state_events.last