exactly the same problem here!
My Lohse cannot be damage, cannot talk to NPCs and will not enter combat.
Lohse can hurt others, which can be abused by just killing the entire encounter on Lohse while the rest of the team is in combat.
Difference is: I play singleplayer.
Lohse is not my main character, but a party member.
I first noticed it when finding the source weapons barrel in driftwood under the Driftwood Fishworks
EDIT: after looking how far back this bug goes, I've aparently been walking through driftwood for a good 3 hours with the bug active. The only combat between before and after the bug was with the magister guards upon entry of the town.
Last edited by JusRachel; 19/09/17 02:24 PM.