1.16.5, 21w05b, 21w08b, 1.19.1 Pre-release 3
The resource pack attached to MC-214686 offers a complete fix for this issue. Mojang have my full permission to (and are encouraged to) replace the affected vanilla model files with the contents of the resource pack.
Unlit redstone torches are lit the same on all sides despite not currently producing light, giving them a slight out of place feel.
- Place down 2 blocks
- Set a redstone torch on one and a fence post on the other
- Power the block with the torch on it with a lever
- Compare the lighting of the torch to that of the fence post
The lighting of the torch's faces depends on the face.
All of the faces of the torch are seemingly lit the exact same.
The resource pack attached to MC-214686 fixes this issue completely.