Two Heroes against two Villains Matchmaking issue

Hi guys, I tried the new mode 2/2 and was very fun, however when someone is leaving the game, every time we have to quit since the player did not get replaced (waited for a very long time)

So I don't know if this is still "under construction" but it's very frustrating. There are also some bugs like when you kill the first 2 enemies, both players will have the 2 kills added to the count.