Minecraft version

1.20

(Neo)Forge version

47.2.20

FramedBlocks version

9.3.0

Describe the bug

there is a problem with the lighting of some blocks in the east and west direction. North and south work fine, but the other two sides appear darker.

How to reproduce the bug

place 4 framed elevated slope edge blocks in a square and fill them with white concrete

Expected behavior

There should be no lighting issues and the color should be the same on all sides

Additional details

No response

Crash log

No response

The different brightness between the X (east/west) and Z (north/south) axis is vanilla behaviour and cannot be circumvented.
The actual issue is that the vanilla light pipeline is unable to properly light faces which are not axis-aligned. To fix this, make sure the experimentalForgeLightPipelineEnabled setting in the forge-client.toml is set to true.
This is how this setup is supposed to actually look: