Had a once-reinforced Squee in play. Cast Fleshbag Marauder. Picked Squee as the creature to sacrifice. It killed the targeted creature, and then locked up. Can’t do anything except bring up the menu to quit.
Waited long enough for the Loop Prevention timer to appear. When the timer ended, I received no prompt. Still frozen.
Can confirm.
I had a Squee in play with some reinforcements on it, killed it with a Beacon Bolt, game locked up.
Squee left play, spinning wheel of death appeared onscreen, and it just kept spinning forever.
2 turns earlier, I killed Squee with Ral’s second ability, and there was no lockup, so this problem is apparently intermittent.
This bug is particularly irritating as Squee is such a perfect match for completing both objectives on AWR 1.3.
Plus, this is another example of old code that worked having bugs introduced to it for seemingly no reason.
Can also confirm..
Almost the same situation as reported by madwren.. squee on board, but casted thud with squee as the chosen creature to destroy. Greg received the damage, then the game locked up with infinite spinning wheel..
when LPS kicked in the timer went down to zero but nothing else happened so I was forced to quit the game 
Bye bye perfect score
Edit: This bug happened to me once before, but long ago (at least 10 months). I assumed, it has got fixed, because it happened just once and never again… apparently I was wrong.
@Oktagon_Support this is still an issue. Can we get him fixed?? Please
This issue is now under investigation.
Thank you for the feedback,
Marcela.
Couldn’t reproduce it.