Yep. If I equip both the Archmage Robes and the mask of Morokei (Both from the College of Winterhold quest) my head just vanishes.

Looks interesting, but gets rather annoying walking around without a head.

Nevermind. I reset my system and now it works.

If you make a save with the gear on and load it, it should fix.

Mine goes in and out randomly. When i enter a new area, fast travel, or re load it will be there or not off and on. It's annoying.