Thermal

I am having an issue where I will kill a foe, but after death they become non targetable which is fine until they they get back up and start attacking me. Which I cannot target them or attack them they usually just keep hitting one of my characters until they are dead, than just walk back to their starting point. I just noticed it happening in the endless path against adra animat's on level 13 and on level 12 against the "blobs". Not sure if this was a problem already listed