I attached a video where you see me place a shulker box with items in it so that it gave off a comparator output, which is then inverted with a redstone torch. when the box is empty the torch should have lit again and activate the redstone dust (which it did) and that should have made a one tic pulse with the rising edge monostable circuit. for some reason the torch activating that redstone dust does make the one tic pulse it should, but when you destroy the redstone and place it again that one tick pulse happens.