There sometimes seems to be an issue with the AI which lets enemies run away as if they are feared, making fights strangely easy, even if you are not a zombie.
Interesting. It has only happened to me in this run. I suppose it must be a bug but I wonder what triggers it.
It could be that the mobs you encountered simply do not posses skills that are able to outdamage your self healing. I know there are certain specialized mobs in the game like the frogs within the seer's cave which are imune to poison and only have poison related abilities.
On the other hand Larian maybe simply needs to teach the AI how to beat this particular build you are using,case in which Larian may need to examine your save file's battle log and full build (which you could probably list here).
