Assignment hard "cutoff" date not working

I have tried creating assignments using the checkbox:


**This is a cutoff date**
_If selected, the student will lose write access to their repository after the date is reached._

However, it is not working as documented. Students do not lose write access, and they can continue to push their work after the due date. (It does get marked as "late" in the classroom dashboard, but student write access is not removed.)

Reproduce the issue by creating an assignment with “This is a cutoff date” selected, then compare the dashboard’s late status with the student repository’s write access after the due date. No file, test, or entry point is identified in the report; done means students can no longer push after the cutoff while the assignment remains marked correctly.

Scritto dal modello di indicizzazione a partire dal testo della issue.