Bran Losing his Head
NPC's head vanishes
Bran's (one of the Random NPCs spawned in Borderland Settlement) head periodically vanishes for a frame and then reappears if you stand still long enough.
Seams so random too. You can watch him for a full min before it does it or it'll do it twice every 3 secs.
Granted, not a game-breaking bug but it annoys the hell out of me.