At some point after updating to tvOS 13, I noticed that a blank user showed up in fast user switching. I went to Settings and it will allow me to briefly switch to this blank entry where it will say user “null” and immediately switch back to a valid account. Not sure how this entry got there but it wasn’t there when I originally updated and isn’t on any of my other Apple TV’s. I’ve already restarted and pulled the plug which didn’t help and actually removed valid user accounts on my ATV. Not really worth the effort to restore over this but wow is tvOS/iOS 13 buggy.
