diff --git a/app/assets/javascripts/pages/search/show/highlight_blob_search_result.js b/app/assets/javascripts/pages/search/show/highlight_blob_search_result.js
new file mode 100644
index 00000000000..e17c87735b4
--- /dev/null
+++ b/app/assets/javascripts/pages/search/show/highlight_blob_search_result.js
@@ -0,0 +1,15 @@
+export default () => {
+  const highlightLineClass = 'hll';
+  const contentBody = document.getElementById('content-body');
+  const searchTerm = contentBody.querySelector('.js-search-input').value.toLowerCase();
+  const blobs = contentBody.querySelectorAll('.blob-result');
+
+  blobs.forEach(blob => {
+    const lines = blob.querySelectorAll('.line');
+    lines.forEach(line => {
+      if (line.textContent.toLowerCase().includes(searchTerm)) {
+        line.classList.add(highlightLineClass);
+      }
+    });
+  });
+};
diff --git a/app/assets/javascripts/pages/search/show/search.js b/app/assets/javascripts/pages/search/show/search.js
index dff9d855b67..4050f2f13f1 100644
--- a/app/assets/javascripts/pages/search/show/search.js
+++ b/app/assets/javascripts/pages/search/show/search.js
@@ -5,9 +5,11 @@ import Api from '~/api';
 import { __ } from '~/locale';
 import Project from '~/pages/projects/project';
 import refreshCounts from './refresh_counts';
+import setHighlightClass from './highlight_blob_search_result';
 
 export default class Search {
   constructor() {
+    setHighlightClass();
     const $groupDropdown = $('.js-search-group-dropdown');
     const $projectDropdown = $('.js-search-project-dropdown');
 
diff --git a/app/controllers/admin/serverless/domains_controller.rb b/app/controllers/admin/serverless/domains_controller.rb
index 9741a0716f2..1d4f10e033f 100644
--- a/app/controllers/admin/serverless/domains_controller.rb
+++ b/app/controllers/admin/serverless/domains_controller.rb
@@ -9,7 +9,7 @@ class Admin::Serverless::DomainsController < Admin::ApplicationController
   end
 
   def create
-    if PagesDomain.instance_serverless.count > 0
+    if PagesDomain.instance_serverless.exists?
       return redirect_to admin_serverless_domains_path, notice: _('An instance-level serverless domain already exists.')
     end
 
@@ -31,7 +31,7 @@ class Admin::Serverless::DomainsController < Admin::ApplicationController
   end
 
   def destroy
-    if domain.serverless_domain_clusters.count > 0
+    if domain.serverless_domain_clusters.exists?
       return redirect_to admin_serverless_domains_path,
                          status: :conflict,
                          notice: _('Domain cannot be deleted while associated to one or more clusters.')
diff --git a/app/services/labels/promote_service.rb b/app/services/labels/promote_service.rb
index e73e6476c12..cc91fd4b4d2 100644
--- a/app/services/labels/promote_service.rb
+++ b/app/services/labels/promote_service.rb
@@ -13,13 +13,8 @@ module Labels
         new_label = clone_label_to_group_label(label)
 
         label_ids_for_merge(new_label).find_in_batches(batch_size: BATCH_SIZE) do |batched_ids|
-          update_issuables(new_label, batched_ids)
-          update_resource_label_events(new_label, batched_ids)
-          update_issue_board_lists(new_label, batched_ids)
-          update_priorities(new_label, batched_ids)
-          subscribe_users(new_label, batched_ids)
-          # Order is important, project labels need to be last
-          update_project_labels(batched_ids)
+          update_old_label_relations(new_label, batched_ids)
+          destroy_project_labels(batched_ids)
         end
 
         # We skipped validations during creation. Let's run them now, after deleting conflicting labels
@@ -32,6 +27,14 @@ module Labels
 
     private
 
+    def update_old_label_relations(new_label, old_label_ids)
+      update_issuables(new_label, old_label_ids)
+      update_resource_label_events(new_label, old_label_ids)
+      update_issue_board_lists(new_label, old_label_ids)
+      update_priorities(new_label, old_label_ids)
+      subscribe_users(new_label, old_label_ids)
+    end
+
     # rubocop: disable CodeReuse/ActiveRecord
     def subscribe_users(new_label, label_ids)
       # users can be subscribed to multiple labels that will be merged into the group one
@@ -86,7 +89,7 @@ module Labels
     # rubocop: enable CodeReuse/ActiveRecord
 
     # rubocop: disable CodeReuse/ActiveRecord
-    def update_project_labels(label_ids)
+    def destroy_project_labels(label_ids)
       Label.where(id: label_ids).destroy_all # rubocop: disable DestroyAll
     end
     # rubocop: enable CodeReuse/ActiveRecord
@@ -105,3 +108,5 @@ module Labels
     end
   end
 end
+
+Labels::PromoteService.prepend_if_ee('EE::Labels::PromoteService')
diff --git a/app/views/shared/notes/_hints.html.haml b/app/views/shared/notes/_hints.html.haml
index fae7d6526e8..902a6e9b363 100644
--- a/app/views/shared/notes/_hints.html.haml
+++ b/app/views/shared/notes/_hints.html.haml
@@ -17,7 +17,7 @@
         -# Populated by app/assets/javascripts/dropzone_input.js
       %span.uploading-progress 0%
       %span.uploading-spinner
-        = icon('spinner spin', class: 'toolbar-button-icon')
+        .toolbar-button-icon.spinner.align-text-top
 
     %span.uploading-error-container.hide
       %span.uploading-error-icon
diff --git a/changelogs/unreleased/196384-highlight-code-search-result-line.yml b/changelogs/unreleased/196384-highlight-code-search-result-line.yml
new file mode 100644
index 00000000000..68de400ec18
--- /dev/null
+++ b/changelogs/unreleased/196384-highlight-code-search-result-line.yml
@@ -0,0 +1,5 @@
+---
+title: Highlight line which includes search term is code search results
+merge_request: 22914
+author: Alex Terekhov (terales)
+type: added
diff --git a/changelogs/unreleased/23206-board-lists-lose-their-filter-label-when-said-label-becomes-a-group.yml b/changelogs/unreleased/23206-board-lists-lose-their-filter-label-when-said-label-becomes-a-group.yml
new file mode 100644
index 00000000000..d79ec320e95
--- /dev/null
+++ b/changelogs/unreleased/23206-board-lists-lose-their-filter-label-when-said-label-becomes-a-group.yml
@@ -0,0 +1,5 @@
+---
+title: Update board scopes when promoting a label
+merge_request: 27662
+author:
+type: fixed
diff --git a/changelogs/unreleased/Resolve-Migrate--fa-spinner-app-views-shared-notes.yml b/changelogs/unreleased/Resolve-Migrate--fa-spinner-app-views-shared-notes.yml
new file mode 100644
index 00000000000..c370e26c316
--- /dev/null
+++ b/changelogs/unreleased/Resolve-Migrate--fa-spinner-app-views-shared-notes.yml
@@ -0,0 +1,5 @@
+---
+title: Migrate .fa-spinner to .spinner for app/views/shared/notes
+merge_request: 25028
+author: nuwe1
+type: other
diff --git a/doc/api/graphql/reference/gitlab_schema.graphql b/doc/api/graphql/reference/gitlab_schema.graphql
index 6d02b2905e2..2d78174d669 100644
--- a/doc/api/graphql/reference/gitlab_schema.graphql
+++ b/doc/api/graphql/reference/gitlab_schema.graphql
@@ -2548,7 +2548,7 @@ type EpicIssue implements Noteable {
   epicIssueId: ID!
 
   """
-  Current health status. Available only when feature flag `save_issuable_health_status` is enabled
+  Current health status. Returns null if `save_issuable_health_status` feature flag is disabled.
   """
   healthStatus: HealthStatus
 
@@ -3539,7 +3539,7 @@ type Issue implements Noteable {
   epic: Epic
 
   """
-  Current health status. Available only when feature flag `save_issuable_health_status` is enabled
+  Current health status. Returns null if `save_issuable_health_status` feature flag is disabled.
   """
   healthStatus: HealthStatus
 
diff --git a/doc/api/graphql/reference/gitlab_schema.json b/doc/api/graphql/reference/gitlab_schema.json
index 40053199d72..2be4573cafe 100644
--- a/doc/api/graphql/reference/gitlab_schema.json
+++ b/doc/api/graphql/reference/gitlab_schema.json
@@ -7397,7 +7397,7 @@
             },
             {
               "name": "healthStatus",
-              "description": "Current health status. Available only when feature flag `save_issuable_health_status` is enabled",
+              "description": "Current health status. Returns null if `save_issuable_health_status` feature flag is disabled.",
               "args": [
 
               ],
@@ -10125,7 +10125,7 @@
             },
             {
               "name": "healthStatus",
-              "description": "Current health status. Available only when feature flag `save_issuable_health_status` is enabled",
+              "description": "Current health status. Returns null if `save_issuable_health_status` feature flag is disabled.",
               "args": [
 
               ],
diff --git a/doc/api/graphql/reference/index.md b/doc/api/graphql/reference/index.md
index cce8603a54f..6a79a407dac 100644
--- a/doc/api/graphql/reference/index.md
+++ b/doc/api/graphql/reference/index.md
@@ -419,7 +419,7 @@ Relationship between an epic and an issue
 | `dueDate` | Time | Due date of the issue |
 | `epic` | Epic | Epic to which this issue belongs |
 | `epicIssueId` | ID! | ID of the epic-issue relation |
-| `healthStatus` | HealthStatus | Current health status. Available only when feature flag `save_issuable_health_status` is enabled |
+| `healthStatus` | HealthStatus | Current health status. Returns null if `save_issuable_health_status` feature flag is disabled. |
 | `id` | ID | Global ID of the epic-issue relation |
 | `iid` | ID! | Internal ID of the issue |
 | `milestone` | Milestone | Milestone of the issue |
@@ -540,7 +540,7 @@ Autogenerated return type of EpicTreeReorder
 | `downvotes` | Int! | Number of downvotes the issue has received |
 | `dueDate` | Time | Due date of the issue |
 | `epic` | Epic | Epic to which this issue belongs |
-| `healthStatus` | HealthStatus | Current health status. Available only when feature flag `save_issuable_health_status` is enabled |
+| `healthStatus` | HealthStatus | Current health status. Returns null if `save_issuable_health_status` feature flag is disabled. |
 | `iid` | ID! | Internal ID of the issue |
 | `milestone` | Milestone | Milestone of the issue |
 | `reference` | String! | Internal reference of the issue. Returned in shortened format by default |
diff --git a/lib/api/users.rb b/lib/api/users.rb
index 1ca222b4ed5..1694f3fe3fb 100644
--- a/lib/api/users.rb
+++ b/lib/api/users.rb
@@ -206,11 +206,11 @@ module API
 
         conflict!('Email has already been taken') if params[:email] &&
             User.by_any_email(params[:email].downcase)
-                .where.not(id: user.id).count > 0
+                .where.not(id: user.id).exists?
 
         conflict!('Username has already been taken') if params[:username] &&
             User.by_username(params[:username])
-                .where.not(id: user.id).count > 0
+                .where.not(id: user.id).exists?
 
         user_params = declared_params(include_missing: false)
 
diff --git a/spec/frontend/fixtures/search.rb b/spec/frontend/fixtures/search.rb
index 025cc53c745..cbe3e373986 100644
--- a/spec/frontend/fixtures/search.rb
+++ b/spec/frontend/fixtures/search.rb
@@ -16,4 +16,19 @@ describe SearchController, '(JavaScript fixtures)', type: :controller do
 
     expect(response).to be_successful
   end
+
+  context 'search within a project' do
+    let(:namespace) { create(:namespace, name: 'frontend-fixtures') }
+    let(:project) { create(:project, :public, :repository, namespace: namespace, path: 'search-project') }
+
+    it 'search/blob_search_result.html' do
+      get :show, params: {
+        search: 'Send',
+        project_id: project.id,
+        scope: :blobs
+      }
+
+      expect(response).to be_successful
+    end
+  end
 end
diff --git a/spec/frontend/pages/search/show/highlight_blob_search_result_spec.js b/spec/frontend/pages/search/show/highlight_blob_search_result_spec.js
new file mode 100644
index 00000000000..4083a65df75
--- /dev/null
+++ b/spec/frontend/pages/search/show/highlight_blob_search_result_spec.js
@@ -0,0 +1,15 @@
+import setHighlightClass from '~/pages/search/show/highlight_blob_search_result';
+
+const fixture = 'search/blob_search_result.html';
+
+describe('pages/search/show/highlight_blob_search_result', () => {
+  preloadFixtures(fixture);
+
+  beforeEach(() => loadFixtures(fixture));
+
+  it('highlights lines with search term occurrence', () => {
+    setHighlightClass();
+
+    expect(document.querySelectorAll('.blob-result .hll').length).toBe(11);
+  });
+});
diff --git a/spec/frontend/search_spec.js b/spec/frontend/search_spec.js
index af93fa88f72..1573365538c 100644
--- a/spec/frontend/search_spec.js
+++ b/spec/frontend/search_spec.js
@@ -1,8 +1,10 @@
 import $ from 'jquery';
 import Api from '~/api';
 import Search from '~/pages/search/show/search';
+import setHighlightClass from '~/pages/search/show/highlight_blob_search_result';
 
 jest.mock('~/api');
+jest.mock('~/pages/search/show/highlight_blob_search_result');
 
 describe('Search', () => {
   const fixturePath = 'search/show.html';
@@ -16,27 +18,41 @@ describe('Search', () => {
 
   preloadFixtures(fixturePath);
 
-  beforeEach(() => {
-    loadFixtures(fixturePath);
-    new Search(); // eslint-disable-line no-new
-  });
-
-  it('requests groups from backend when filtering', () => {
-    jest.spyOn(Api, 'groups').mockImplementation(term => {
-      expect(term).toBe(searchTerm);
+  describe('constructor side effects', () => {
+    afterEach(() => {
+      jest.restoreAllMocks();
     });
 
-    const inputElement = fillDropdownInput('.js-search-group-dropdown');
+    it('highlights lines with search terms in blob search results', () => {
+      new Search(); // eslint-disable-line no-new
 
-    $(inputElement).trigger('input');
+      expect(setHighlightClass).toHaveBeenCalled();
+    });
   });
 
-  it('requests projects from backend when filtering', () => {
-    jest.spyOn(Api, 'projects').mockImplementation(term => {
-      expect(term).toBe(searchTerm);
+  describe('dropdown behavior', () => {
+    beforeEach(() => {
+      loadFixtures(fixturePath);
+      new Search(); // eslint-disable-line no-new
     });
-    const inputElement = fillDropdownInput('.js-search-project-dropdown');
 
-    $(inputElement).trigger('input');
+    it('requests groups from backend when filtering', () => {
+      jest.spyOn(Api, 'groups').mockImplementation(term => {
+        expect(term).toBe(searchTerm);
+      });
+
+      const inputElement = fillDropdownInput('.js-search-group-dropdown');
+
+      $(inputElement).trigger('input');
+    });
+
+    it('requests projects from backend when filtering', () => {
+      jest.spyOn(Api, 'projects').mockImplementation(term => {
+        expect(term).toBe(searchTerm);
+      });
+      const inputElement = fillDropdownInput('.js-search-project-dropdown');
+
+      $(inputElement).trigger('input');
+    });
   });
 });