Having the same problem. It was fine until yesterday's patch. I've tried reparing the game files, running the game without mods, resetting the Sim, nothing works. My Sim is a spellcaster but walks around as a werewolf, lunging forward, scratching, etc. She even had the red aura when they've accumulated fury. I also noticed that in CAS, when she does the spellcaster animations, there's no light effects anymore.
EDIT: I've just found a way to solve it. I used the cheat to give my Sim the werewolf trait (traits.equip_trait trait_occultwerewolf) and then the cheat to remove it (traits.remove_trait trait_occultwerewolf) and now she's acting like a normal spellcaster again.
It worked but I had to reset (debug) afterwards
