Use Clean Create 5 courses: no enrolled users 1 enrolled user, 0 activities 1 enrolled user, 10+ gradeable activities 100 enrolled users, 0 activities 100 enrolled users, 10+ gradeable activities Go to the grade report, and make sure the floading headers work as you'd expect Note: There are no floating headers when there are no enrolled users, just check nothing breaks when this is the case Repeat on theme_base Repeat on all supported browsers