• Create a sideways piston and power it.
• Stand on top of the piston block, on the side with the piston arm, and depower the piston. You will not get pushed.
• Then, stand on the side opposite the piston's arm, and depower the piston. You will get nudged off.

This seems somewhat backwards - I would expect the piston's arm to pull me off, but the exact opposite side of the piston does.

The area where you do get pushed off is 4 pixels wide, roughly equal in width to the piston arm texture.

This is not directional behavior, and this also does not apply to players who are standing in the piston's arm itself (like Etho's new conveyors, which better not be a bug because they are fab)

*Video demonstration:* https://youtu.be/eoBmBVPg-e8