Little bug here: I casted Protego Diabolica, and an Armored Goblin had Parry Stance and Torment. On its turn, it kept receiving damage (I don't remember if 1, 2 3), repeatedly, and upon reaching 0, nothing happened, as it was still damaging. After some minutes, the battle-finished pop-up appeared, and nothing was on the loot grid. Then, epic card selection as usual (after a Queen chess piece fight).
If there's a better place to report this, let me know.