Shapes set to Additive are not visible when the environment has Fog in it

As pictured, those Shapes assets vanish when Fog is on. If Density is set to 0, the Shapes reappear, but then the scene has no fog.

I saw in another thread someone asking for a toggle to turn fog off for specific/all shapes, but I could find no such parameter to disable fog's effect on the shape asset anywhere in the asset itself. 

Is there some way to have both fog, and shapes assets set to additive?