Recordings (imported or newly created) end up in seemingly random activities.

Steps to reproduce:

Copy a course that includes bigbluebutton activities. The recording links are not transfered so you link the old recordings to the newly copied course. Also record some new lectures.

Expected outcome:

The imported recordings are in the bigbluebutton activity

Actual outcome:

Recordings sometimes stay in the proper activity, but sometimes end up in a completely different block. Deleting recordings from one list may remove them from another list, vice versa for adding recordings may end up in a completely different location.