Is this an animation error? I was watching the 2.5 of Star Wars, and when they're walking into the Cantina, the nostril(?) on the creature outside the door doesn't seem to move along with his head. I only noticed this because it was one of the scenes Harmy included as an example where he had to do some stuff by hand in his "trailer" for the despecialized editions. Here's a recording that I took
https://youtu.be/VPrPpzaE4r0