Versions

• Minecraft Version (exact version number): 1.16.5
• Forge Version (exact version number): forge-1.16.5-36.0.46
• Mod Version (exact version number): CookingForBlockheads_1.16.5-9.3.1.jar
• Do you use Sponge, OptiFine or Vivecraft (and which?):

Describe the bug
The doors of the table and selves are wierd dark

To Reproduce
Steps to reproduce the behavior:

1. Place a table
2. place cubblestone behind
3. Doors appears to be dark

Expected behavior
A clear and decent looking door
Screenshots

Additional context (e.g. Crash Log if it crashed)
Add any other context about the problem here.

I have the same issue running the enigmatica 6 expert modpack which doesn't seem to have neither shaders nor optifine. It seems to only happen when the block is facing south and smooth lighting is either minimum or maximum--it works correctly when smooth lighting is turned off. I'm on version 9.3.4 minecraft 1.16.5

Do you use any mods that alter rendering (e.g. shaders) or improve performance?