I disagree. I don't have any shaders and still getting it.
That's a different issue, you are showing a map view, and in map view it can't be fixed, since the map view treats PBR differently, in a way it doesn't show the background scenery in PBR, but does activate PBR for the add-on scenery objects, so they won't match, but this is only a problem of map view.
The problem of night textures being to bright is really caused by P3D V5 different rendering at night, which seems to change with each version, so if you run the FSDT Live Update now, night textures should now be more matched to the surrounding scenery. However, the difference in rendering in Map view can't be fixed.