BiB showing +2% when nothing except stamina on belt changes

This just seems like a weird visual bug im guessing
Its showing +2% dps when it changes nothing except a belt enchant that gives stamina for a hunter.

Yeah it’s the weapon enchant – you have it locked in and it’s not highlighting it in green which it probably should, as your current gear has no weapon enchant. I think right now it doesn’t highlight something that you have explicitly locked, but it probably should, so I can change that in the next update.