Why is this happening. My mates have been complaining about it for weeks but I just got it for the first time today.
Get into game, run around for 20 seconds, and just get booted to the main menu with no kicked or error message.
Join another server, run around for 20 seconds, and get removed to the main menu again.
It's a pretty game breaking bug (you literally can't play) and I've seen no one from SD's end acknowledging the problem.