Problem

Mobs or players standing on block, attached with double sticky piston facing upwards, cause them to glitch through blocks. This happens even if there's no ceiling blocks obstructing them.

How to reproduce

1. Build a contraption shown on images.
2. Place any mobs or minecart on the block where sticky pistons will push up
3. Power the contraption.
4.  Mobs and minecart remains underneath the block, represented by image.

What to expect

Entities should be on top of the gold block in the image after running.

Test

This bug is tested in Minecraft 1.16.5 and Minecraft 1.17 vanilla. Simulated in The Void preset(superflat) and 2 default worlds.