Is Tier 3 Cultural Helmet bugged?
Technically, all helms for Asura does that. Check the Pirate hat and T3 Culture Light Armor Helm.
All actual helmets and other headgear that covers all or part of your head makes you bald. Only masks and circlets and such leave your hair intact.Thats the way this game (and many others) handle potential clipping problems with hair and helmets, rather than actually fitting the helmet and the hair together (which would need to be done per helmet in some cases) they just remove the hair altogether.
Its one of the reasons I rarely actually leave my helmet visible.