POE2 0.4.0b - Acidic Concoction - Requires Unarmed cannot use with bow

For some reason the Acidic Concoction ability requires Unarmed, and if using a Bow on weapon set one and a staff on weapon set two. Or using weapon set 1/2 as a locked bow for both to adjust passives, it also doesn't allow the Pathfinder to use it.

One of the two weapon sets has to be left as Unarmed to use the concoction which makes this ability not useful.