Cannot enter feedback from grader report when feedback was previously deleted from assign grader

Create a course with a student Add an assignment. Make sure that Feedback types > Feedback comments is set. Navigate to the grade book for the course and turn editing on Click the " Edit grade " cog icon for the student's assignment. Add some feedback. Save the changes. Edit the grade again and verify the feedback saved Open a new browser window and go to the assignment. View all submissions for the assignment and check the "Quick grading" checkbox Enter some feedback for the student and press " Save all quick grading changes " Go back to the grade book and edit the grade Verify that the feedback from the assignment quick grading page has overridden the previous feedback Go back to the assignment and view all submissions again Erase the feedback given for the student and save all quick grading changes. Go back to the grade book and edit the feedback. Save the changes. Edit the grade again and verify the last feedback you entered is still shown.