I hope no one minds me resurrecting this topic. No pun intended!
Was it confirmed whether this was a bug or working as intended? I am also having this issue. I have defeated the idol and the twins, but the skeletons are resurrecting. I waited until after destroying the two minibosses to wipe out the trio, but they immediately resurrected and the battle did not end.
eta
I was able to work around this by having everyone flee from the fight, then walking back and finishing off the otherwise immortal trio. They did not resurrect despite it taking more than one round to finish them.
Last edited by red tonic; 25/06/14 11:08 PM.