Steps to reproduce:
1. If I login to Matterhorn and open engage/ui or the Theodul player I see unexpectedly that the user is anonymous and I am kind of logged in. But I cannot log-out but I am only offered to login again.
That is because of a change in introduced by the new admin ui in /info/me.json.
Previously there was an entry "username": "admin". Now this is missing and we have this instead: