Sodium currently ignores much of the data in BakedQuad because vanilla itself does not use it. However, some Forge mods rely on being able to specify this data from the model data. This includes:

• The normals, which affects how lighting is calculated.
• The base color, which is then mixed into the block tint and lighting color.
• The light values, which is primarily used for emissive lighting (added to the received light from the world.)

Partially resolved in 353771e.