Had an interesting bug that I just experienced today. When clearing the Cordial Invitation questline, enemies went invisible. They could still be damaged and dropped loot, however, that loot was also invisible. The fun really started there. After returning back to the questline map from selling off the loot, then TP back again to the city, all the NPC's went invisible and my game crashed.

After finally logging back in, went through Cordanan's Outskirts, and all NPC's have been replaced my T-Posed avatars of myself.