I just played an arena game where bouth of me and my enemy had Kil’jaeden. When he was overpowered by my minnions he did not ended his turn i somehow i got dropped. But anyway i stayed in the game for like 20 minutes or more in which i never got a drop massage and i was able to interact with the environment, which hints me that there is a bug in which my enemy was well aware and used it to take me hostage in the game with only way for me do close the game. 
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