I was playing heroic tavern brawl and i had to cancel the matchmaking, a message poped-out telling i have disconnected to the game. This bug has been around for a while, so i quickly close hearthstone and log in again so i can reconnect, but when the game finally open i didn’t get the reconnect and i had a defeat strike 
I checked again and the same happened, and it also happen in arena or standard, sometimes if you REALLY QUICKLY relog you can get to the game, but this is not the way is supossed to work.
I wish I could get the heroic brawl refund