Im a realm owner and this bug has affected various of my players. It starts out with a server crash and one of the people that were online when the crash hits gets the bug. Every time they try to connect they can't and it crashes the server for everyone else. Also the issue doesn't resolve itself. Tested out with one of my players to see if they could connect and still crash the server after various days of waiting. Only workaround is to make a new gamer tag. I have 4 players that had this bug one of them got it on his second gamer tag. They tell me that they weren't doing anything special when the bug hit them. Also, the bug is really annoying, the affected player doesn't know he has it and keeps trying to reconnect crashing the server for everyone else.