Transparent fog rendering with custom sky boxes

[MiraculixxT]

When using a custom sky box texture with any mod (like FabricSkyBoxes), the fog rendering appears transparent to the viewer and world cuts become very visual. This issue only exists if the fog color is not pure white #ffffff.

Current state

Demonstrated with red fog color, appears for all colors.

Expected result

With custom sky toggled off. Should look like this even with custom sky box textures.

How to reproduce

• Use any custom sky box mod to add a sky box texture (example sky: Better Sky)
• Use a fog color except white
• Look into distance