NPC trying to walk through a closed door.
This one happened to me at the Lizard's Head pub in Telvanni Canton. I spotted the NPC Maesa Gabinia trying to walk through the closed door at the basement. It was the first time (with this game) that I entered this place and that I went here. When I walked closed to her she turned to me and asked something. I went a few steps back and she resumed her weird behavior. After opening the door she acted normal again and walked to the center of the room (if my memory doesn't fail me).
Please see the screenshot.