For this game I keep getting loads of reports from Xbox players (only Xbox, not PC) that they keep getting error 105 (indicating the game is full) when trying to join the game. They always press Play, in about a second that error message pops up. When retrying, the message just keeps popping up. If they try again a day later or so, there’s a fair chance it’ll work perfectly fine then.
While some players experience those issues, definitely not all do, as other players can still join the game at the time one player has those issues.
I can’t really give reproduction steps, sadly, but it seems strongly related to friends. Players who have reported this issue tend to state their friends also have the issue at the same time. This makes me think it’s related to joining a server the players friends are in while the server is full.