The rotating cube model has an illogical random light rendering

The rotating cube model has an illogical random light rendering.

 With XeKr Light Color and 3D model pack:

https://www.curseforge.com/minecraft/texture-packs/xekr-light-color/files

in1.14.4:

in 1.16.x:（The blocks in the same direction on the rail have different coloring.）