The bug
Retracting piston arm incorrect lighting is back in 1.11.2 (MC-11023).
This is not an issue with no smooth lighting, but it is easier to observe when using the setting "smooth lighting off."
How to reproduce
Place a sideways facing piston on the ground
Place a solid block next to the piston
Place a lever on that piston
Activate the lever and observe the side of the piston head
Related issues
Attachments
Comments


Affects 20w29a, can I request ownership?
Can confirm in 20w51a.
Can confirm in 21w03a.
Can confirm in 21w05b.
Can confirm in 21w06a.

Affects 1.17-pre1, requesting ownership
Can confirm in 1.17.1. Video attached.
Can confirm in 21w41a. Just for clarification purposes, this issue can be seen with smooth lighting enabled but is more easily visible when having this option turned off.
I'd like to request ownership of this ticket since the current reporter has been inactive since May of 2020.

Confirmed in 1.18-pre4.

Confirmed in 1.17.1 and 1.18-pre5.
Can confirm in 1.18.1.
Can confirm in 1.18.2 and 22w16b.
Can confirm in 1.19.2.

Confirmed in 1.21.3