I’ve seen one other person report this so far, earlier this week actually. As far as I can tell it amounts to an oddity in the patching system. There was a period of time where NPCs weren’t being patched efficiently. What it resulted in was a hole in the code. You may disprove this theory but I’m guessing you patched a save that was from sometime before 0.1.8?
The general bug is that his character didn’t ever get the proper variables set so he exists in a sort of half state, hence why he just sort of stands there and animates improperly. I’ll see if I can do some sort of pinpoint patch to fix him. I think something like that is possible. The only other alternative is to just start a fresh save.