i know this is a bit minute, but the studded gauntlets are blood resistant.
It happens with most if not all hand models, eg plate gauntlets, in native too with scale gaunt so it's not fixable.
Yeah, it bothers me too, and I don't know why it does that. Happens with all gauntlets that have an accessory part (any glove + forearm guard).
So I guess just suffer.
They are enchanted, duuuuh. Haven't you seen the runes on them?
In all seriousness, this is a Warband issue that affects all of the gauntlets with an attached vambrace :/