if you sneak, you can put a block on a block with display (crafting table). you're not coming on the screen but block drop

if you sneak, you can put a block on a block with display (crafting table and more). you're not coming on the screen but block drop.

1.you put a block with screen down. (crafting table, hopper, furnace, dropper, that kind of blocks)
2.you press and hold down sneak.
3.Now you can just put a block against it.