Steps to reproduce:
1. Click Review/Trim for any recording in a hold state
The Edit Metadata form is aligned left instead of centered, and so appears about 100 px left of the media player window. In Friefox, this form is correctly centered. Screenshot to follow.
Per http://opencast.3480289.n2.nabble.com/JIRA-Ticket-Cleanup-proposal-td7475080.html, this has been bulk resolved as won't fix. If this is still important to you please reopen and we can triage as appropriate.