When I unpack my BSA meshes and textures quite a few NPC's get strange clipping and "bald spots" on their heads. It's like their skull is clipping through their hair. I've tested it twice now, and if I delete the meshes and textures folders it's fine. Unpack them again, and it happens again.

Yes, everyone who has unpacked the archives into the game folder has had this problem.

Oh, OK. I wasn't aware of that as I'm just getting around to unpacking mine. So can I assume there is no fix as of yet? If not, wouldn't saving the unpacked files somewhere as a resource if you needed one work OK?

You can save them anywhere except the Data folder.