One of my users got a weird situation on first login

[2fst4u]

One of my users got the initial setup page where you put in the Plex server details etc and messaged me asking "what do I put in here". I, the admin who had already configured those settings was very confused and had no idea how they got there so I asked them to close the tab and try and open it again, which got them to the intended home page of overseerr.

I've never seen this before and since it was a user of mine I don't have the details for what happened, but has anyone seen this happen before? It was a bit concerning, I hope that user wouldn't have been able to actually set anything in there if they tried because they aren't an admin.