Hi
IM using V5.2, (although I've had this issue in prior versions) and i have an issue with Volumetric fog removing the sunset colours, to see what i mean set a dusk time setting or as near as you can and select Volumetric fog on then off.
Volumetric fog off
https://i.ibb.co/7VMykgt/2-Untitled.jpg
Volumetric fog on
https://i.ibb.co/y6T2SHD/1-Untitled.jpg
Im using Rex but the issue is the same with default P3D
Thanks
Rich
