So, there isn’t really line numbers in obfuscated bytecode, I’m guessing you mean after that first big loop that sets the first local variable? In function afe/a (net/minecraft/item/crafting/CraftingManager/func_82787_a/net/minecraft/item/crafting/CraftingManager/findMatchingRecipe)?
So ‘why’ is it that GT6 tools cause that to be processed but vanilla tools don’t?