Pistons pulling items instead of pushing them - watch both of the videos to understand clearly the problem.

The problem happens in all platforms, not only Windows 10.

Problem 1: The piston broke the shulker box and somehow the shulker box landed on the piston.

Problem 2: The piston broke the shulker box and somehow the shulker box passed through the piston in the opposite direction and landed behind the piston.

Recommend watching all the videos to understand clearly what is the problem. Ask me anything you want.