Problem B: quick grading doesn't save grading and comments.

• Create one online assignment and perform one online submission as a student. Save it.
• go to "view xx submitted assignments".
• check "allow quick grading" and save preferences.
• Both the comments and the "scale" elements are shown. Introduce anything on them and click "save all my feedback".
• PROBLEM B: Nothing is saved in DB. On refresh, the page shows nothing.

note: the Form element seems to be broken.