Steps to reproduce:
1. get a deep link to the editor in the admin UI for a certain recording.
2. Open this link in a browser where you are logged in and the editor will open for this recording.
3. Log out and open the same link again.
After the login you are on the events table
The editor should have opened for the event.
Workaround (if any):
Hi Rüdiger, Lars has built a link redirect module for resolving this issue for SWITCH. In case it makes sense, that one could be contributed back to the community.
Note that the problem is because of the anchors in the URL: Those are only known client side and generally will not survive redirects.