Saving the forum settings form when the activity has grades disables grading

Master: Login as teacher Create a forum: Set Whole forum grading to Point-based Set up some form of ratings (anything will do) Save Edit the forum settings Expand the "Grade" section Confirm that the "Rating" settings are visible and not disabled Confirm that the "Whole forum grading" settings are visible and not disabled Login in a second browser as a student Create a discussion in the forum Close the student window and go back to being a teacher again View the discussion and give a Rating for the post View the list of discussions Click on the "Grade users" button Give the user a grade Edit the forum settings Expand the "Grade" section Confirm that the "Rating" settings are visible but disabled Confirm that the "Whole forum grading" settings are visible but disabled Save changes on the page Edit the forum settings again Expand the "Grade" section Confirm that the "Rating" settings are visible but disabled Confirm that the "Whole forum grading" settings are visible but disabled All branches (including master): Create an assignment Edit settings for the assignment Expand the "Grade" section Confirm that the grade settings are visible and not disabled As a teacher grade any student (you don't need to upload content for that student) Edit settings for the assignment Expand the "Grade" section Confirm that the grade settings are visible but disabled Save changes Edit settings for the assignment again Expand the "Grade" section Confirm that the grade settings are visible but disabled