Exponential Height Fog only covering half of sky

Using an exponential height fog results in only have the sky being covered. Tried tweaking every setting but can’t seem to get it to cover the whole thing properly. Any ideas?

You can actually only achieve this if you set Fog Max Opacity to a value that is too low (<1). Then the nebula only shows up around the Light Source and the rest of the sky remains clear.

Not sure what OP is trying to do, but using a post process volume with a material works for covering the sky.
would stand to reason adding the material to an unbound post process would work as well.