Fix permissions

app/helpers/boards_helper.rb

@@ -63,11 +63,7 @@ module BoardsHelper
   end
 
   def can_admin_issue
-    if @project
-      can?(current_user, :admin_issue, @project)
-    elsif @group
-      can?(current_user, :admin_board, @group)
-    end
+    can?(current_user, :admin_issue, current_board_parent)
   end
 
   def board_list_data

app/policies/ee/group_policy.rb

@@ -9,6 +9,9 @@ module EE
       rule { reporter }.policy do
         enable :admin_list
         enable :admin_board
+
+        # Only used for group issue boards
+        enable :admin_issue
       end
 
       rule { public_group }.enable :read_board