I was facing off against Haro Setting-Sun when he attacked with his minions and Psychic Screamed minions into the deck. When I went to draw, I saw Dispatch Kodo, a card he shuffled in, as being drawn but it didn’t appear in the hand (however, it did take up “ghost room” in the hand). I had the Pet Training Hunter hero power and used it, and ended my turn. When he passed back to me, I again drew a ghost card (this one I didn’t see) and am now unable to take any actions, including passing the turn or spending mana crystals. I was playing with the “Nesting” anomaly enabled.
This occurred on PC. Quitting out and re-entering fixed the issue, but figured I’d still report it.