1 files changed, 14 insertions, 6 deletions

diff --git a/app/services/issues/update_service.rb b/app/services/issues/update_service.rb
index 702527d80a7..e05df029ae3 100644
--- a/app/services/issues/update_service.rb
+++ b/app/services/issues/update_service.rb
@@ -61,12 +61,7 @@ module Issues
         todo_service.update_issue(issue, current_user, old_mentioned_users)
       end
 
-      if issue.assignees != old_assignees
-        create_assignee_note(issue, old_assignees)
-        notification_service.async.reassigned_issue(issue, current_user, old_assignees)
-        todo_service.reassigned_assignable(issue, current_user, old_assignees)
-        track_incident_action(current_user, issue, :incident_assigned)
-      end
+      handle_assignee_changes(issue, old_assignees)
 
       if issue.previous_changes.include?('confidential')
         # don't enqueue immediately to prevent todos removal in case of a mistake
@@ -90,6 +85,19 @@ module Issues
       end
     end
 
+    def handle_assignee_changes(issue, old_assignees)
+      return if issue.assignees == old_assignees
+
+      create_assignee_note(issue, old_assignees)
+      notification_service.async.reassigned_issue(issue, current_user, old_assignees)
+      todo_service.reassigned_assignable(issue, current_user, old_assignees)
+      track_incident_action(current_user, issue, :incident_assigned)
+
+      if Gitlab::ActionCable::Config.in_app? || Feature.enabled?(:broadcast_issue_updates, issue.project)
+        GraphqlTriggers.issuable_assignees_updated(issue)
+      end
+    end
+
     def handle_task_changes(issuable)
       todo_service.resolve_todos_for_target(issuable, current_user)
       todo_service.update_issue(issuable, current_user)