I'm trying to play with my friends, and occasionally a random will join our game (in progress, not aboard the bridge), who always say they were trying to join their friend, causing it to crash at the end of the mission with a network error. This is hilarious, but extremely annoying, bug. I am struggling to find any other context to provide, it seems completely random. They can join at the beginning or mid mission, either way, network error at the end of the mission if it happens. Then usually my friends get dumped into a random lobby with other people. What's going on?