Undead in DOS2 behaved in the same way. And like DOS2, undead in Pathfinder are healed by a different way, negative energy spells and effects. Seemingly why the game provides a lot of inflict wounds scrolls, or at least I'd think that's why. But it really sucks if you have party members like Seelah using Channel Positive Energy healing effects without the Selective Channel feat.
Life-Dominant Soul worked for that, I just expected it would solve the issue in general and being unable to use healing potions was really annoying.
