Thanks for the patch! :) Your work is not done yet however! *Cracks whip*
Wanna get this one down before I forget the details:
Butchering from within the inventory (selecting corpse and pressing butcher) lowers both the durability of the "Cutter" item wielded, and non-identical Cutter items stashed in the inventory.
Reproduction/Example:
-Wield Primitive Bone Knife, have a hare/fish, stone knife, and additional Primitive Bone Knife in inventory
-Click creature corpse and butcher from within the inventory
-Durability of wielded Bone Knife and Stone Knife in the inventory will both lower, the Primitive Bone Knife in the inventory will not.
Secondary: I also think I saw you catch that drinking blood from corpse within inventory bug on the Talamann stream? Neither pressing r or the icon from within inventory worked for me either.