The bug
Retracting pistons push entities which are directly behind the piston base back a little bit, this can be seen in
[media]. As the entity is not visibly intersecting with the retracting piston, there should be no reason why the entity is moved.
How to reproduce
Place for example a sideways facing piston
Stand directly behind the piston base
Power and unpower the piston
→ You should be pushed by the piston
Linked issues
is duplicated by 6
MC-12153
Strange texture in redstone update
Resolved
MC-117954
Piston pushes u when u are behind it
Resolved
MC-158198
Player standing right behind a piston will be pushed back
Resolved
MC-160462
Pistons Can Push Entities Behind Them for 0.260 Blocks When Unpowering
Resolved
MC-167669
Piston Collision Issue
Resolved
1 more links
relates to 1
Attachments
Comments 6
This seems to affect pistons rotated in all directions, therefor I am going to make the report more generic, I hope you are fine with that.
This one was quite certainly fixed during snapshots 🙂
It was last time I checked, seems it's back in 17w50a, will attach confirmation video in a minute.
Please do not mark unreleased versions as affected.
You don't have access to them yet.