Courseware loses videos when copying to work place

[pettobia]

Version
3.30

Describe the bug
When you copy a courseware from a course to your work place, the opencast blocks lose their videos. The message "Es wurde bisher kein Video ausgewählt" is shown.

The same problem occurs when you copy a courseware directly from one course to another, if you did not activate opencast in the new course and create a playlist first.

Screenshots