I have the same problem. It only happens with the dragon claw gear though (well, at least the... blue ones, plate thingies?).
when I equip it in dragon form, and return to human form, my weapons are unequiped and I still have my claws as weaps on.
Even tried to swap slots, put the claws in first slot and weaps in another, but the dragon seems to be using not the first slot but the one you are using so, now two were filled with the claws.
could always remember switching from weap slot but I always forget.
It's a bit annoying
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