After transforming my sim into a werewolf, they were almost always in werewolf form. However, when I switched them to human form (while still a werewolf occult sim) the werewolf body and face details...
Ideas
I'm having the exact same isssue, also persisting even when I cure the werewolf through Wolf-B-Gone.
Fun fact, if you change your sims' appearance to a normal face in the normal worlds in the game and then say, go to Batuu, it reverts and you have to rechoose the face again (does not remove the wolf features in my screenshot but at least removes the ears and the half-morphed wolf/human texture on her face)