Don't create a supercircuit, only test it with a hopper, only a hopper and watch his slots. by this way, they will begin to check the hopper data and not cases like hopper-chest or hopper-hopper.
PD: YEEEE resolved 😛, not cheats jijijiji
Directly you can watch the hopper slots, i tried with other items (netherbrick slab) and it seems that duplicate the item in a save/refresh time, i think.
I have the some problems