Collectible Card Game Headquarters

Describe the Bug:
Maybe a screwd version so bug may not be real,try to load the savegame.
Defiler of Souls ability doesn't work none player sacrifices a monocoloured creature in his upkeep
link that was supposed to be fixed: viewtopic.php?f=110&t=4108&p=119896&hilit=Defiler+of+Souls#p119896

Which card did behave improperly ?
Defiler of Souls

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
2014/02/18: Born of the Gods v2 - DUEL

What exactly should be the correct behavior/interaction ?
Defiler of Souls

Are any other cards possibly affected by this bug ?
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Fixed in f19bacc.

AI will sac a creature, but for player the choice may be canceled (making it voluntary instead of mandatory).

Fixed cdc491a.