Pistons push you up a block

If a piston pushes you into a block you end up on that block. It does not matter if the piston is on feet or head level but the block needs to be on feet level. It also only works with players not with other mobs. I have tested it in both 1.13 and 18w30b. And also you do not get pulled back when the piston retracts, I messed that up in the video