Unarmed Bug?

Hello!
We have recently tested a mod for unarmed which increases damage when below 33% armor which boosts all unarmed/kick attacks by a certain %!
Upon reaching 0 armor then proceeding to gain any amount of armor whilst still staying well below the threshold the mod is rendered ineffective.

Can an admin or anyone can help us understand if this is intended? or if it's just a bug?

Hmm, that does sound unintended.

I stopped using those mods since they kept showing on things without enough armor. Hmm.

It's a bug, yep.