FSXA Custom landing lights show borders in fog

I have "additive night only" why does it show during the day? I know i can override this by my coding but it should have worked by this setting. Must be that its a alpha channel.

- Diffuse: Light splash texture, alpha channel
- Spec map: Light splash texture, no alpha
- Self-illumination map: See spec map (There is no image to see, missing!)

This is way better than the recipe i was given a few years back. How new is this? And blends better when 2 lights are on and dusk time. Thanks Heretic.
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