I think #32 is not bug. White can't 27...Bxb4 if rule is below ( by Wikipedia ) "but an exception exists when the checked player can win the game by exploding the checking player's king.".
http://en.wikipedia.org/w/index.php?title=Atomic_chess&oldid=641771009
27...Bxb4 is not winning move, so Black can't do that.
http://en.wikipedia.org/w/index.php?title=Atomic_chess&oldid=641771009
27...Bxb4 is not winning move, so Black can't do that.