Is there a fix to this visual bug that occurs when one uses shaders and JEI at the same time? Blocks have weird shading and 2D items appear darkened (Minecraft version: 1.16.5).

This is an issue when JEI is combined with Optifine 1.16.5 G8, Optifine 1.16.5 G7 does not introduce this issue,
sp614x/optifine#5687