After playing Kil’Jaeden my opponent played Steamcleaner and the client wouldn’t let me take my turn after the pass. Cards just kept milling from the deck. I quit to restart the game (not concede). Restarted client didn’t even attempt to reconnect to game, it just forfeit the match.
Same here 
seems to be a known issue
https://www.reddit.com/r/hearthstone/comments/1gloc30/kiljaeden_portal_unlimited_turn_time_bug/?rdt=48525