I just fought a Ogrekin in the Giant's Lair on 4-2 and the game locked up completely. When I force quit the app and come back it rolls to see if the monster is defeated and then freezes again.
If I had to guess what's going on I think it's this:
1. I rolled a 4 on the Ogrekin's table, meaning that when defeated it goes to the bottom of the deck
BUT
2. Due to the adventure rules I have to roll to see if it's defeated because it's a giant
SO
3. It ends up both having to have it defeated and go to the bottom of the deck.
Hope that helps.
(And selfishly hope that helps me, because I literally can't do anything in the campaign until you can get me out that loop ; )