At the end of the mission after all four players push "quit" the game lingered and took awhile until the screen finally faded. Once we returned to the ship all levels and loot gained during the mission was lost, but the mission itself was marked as finished.

This is the fourth time this happened and this time it became the dealbreaker for us, and our group took the decision to give up the game after just 1/3 of the campaign.

This is heartbreaking because we actually liked the game. All four of us bought the game with all dlc's together and even the guy who normally don't like diablo-games enjoyed it. We truly wanted to play this one, but after this happened for the fourth time we are too demoralized to continue. We had a vote and saw no other option than to give the game up. I did send in a ticket but that is all.

Apperantly this have been happening for a long time.