If you craft equipment while one of the ingredients is something you're currently equipped with and it's the only one you have of that item, and you don't select the craft and equip option, the ingredient doesn't get removed from your body and stays equipped until you unequip it. The game does remove it from your inventory so you can't use it as a dupe and keep crafting from it.
Equipped items need to be filtered from available alchemy ingredients.
***Dismantle also have the same bug
Last Edit: Jun 29, 2018 12:23:01 GMT -6 by thor777