Game forces your party to another room


I am sorry for poor topic name, but I am unsure how to name it. So we are playing PvP Evacuation with friends, we win 4 games in row and monster decides to quit. We have 1-2 minutes of searching for 5th player, then clever ame decides to force us out of our game to some random one dude, losing all our 4 won games, this happend three times already and is rather annoying. Why doesn’t it let the one guy join, and rather makes us join his game? I suppose it’s a bug.