Merge branch 'fix-filtered-search-issuable-empty-state-exception' into 'master'

Fix filtered search issuable empty state exception

Closes #31455

See merge request !11347

app/assets/javascripts/dispatcher.js

@@ -123,7 +123,7 @@ import ShortcutsBlob from './shortcuts_blob';
           break;
         case 'projects:merge_requests:index':
         case 'projects:issues:index':
-          if (gl.FilteredSearchManager) {
+          if (gl.FilteredSearchManager && document.querySelector('.filtered-search')) {
             new gl.FilteredSearchManager(page === 'projects:issues:index' ? 'issues' : 'merge_requests');
           }
           Issuable.init();

spec/features/projects/sub_group_issuables_spec.rb

@@ -0,0 +1,32 @@
+require 'spec_helper'
+
+describe 'Subgroup Issuables', :feature, :js do
+  let!(:group)    { create(:group, name: 'group') }
+  let!(:subgroup) { create(:group, parent: group, name: 'subgroup') }
+  let!(:project)  { create(:empty_project, namespace: subgroup, name: 'project') }
+  let(:user)      { create(:user) }
+
+  before do
+    project.add_master(user)
+    login_as user
+  end
+
+  it 'shows the full subgroup title when issues index page is empty' do
+    visit namespace_project_issues_path(project.namespace.to_param, project.to_param)
+
+    expect_to_have_full_subgroup_title
+  end
+
+  it 'shows the full subgroup title when merge requests index page is empty' do
+    visit namespace_project_merge_requests_path(project.namespace.to_param, project.to_param)
+
+    expect_to_have_full_subgroup_title
+  end
+
+  def expect_to_have_full_subgroup_title
+    title = find('.title-container')
+
+    expect(title).not_to have_selector '.initializing'
+    expect(title).to have_content 'group / subgroup / project'
+  end
+end