Version
3.29

Describe the bug
We encountered a single case where the <course_id>_Instructor and <course_id>_Learner ACLs were missing on a video in Opencast. This video has been copied to another course where the mentioned ACL were missing.

Speculations:

• Somewhere in the code, an ACLs check has been forgotten.
• A race condition between the ‘find video’ cron job and the ACL check may have occurred.

It would be useful to check, whether the ACLs are checked and correctly updated at all relevant points in the backend, where videos are added to a course.

To Reproduce
At the moment, we don't know how to reproduce this problem or if it can still happen.