When its snowing and there is a light source then the snow particles get gray.

...What...?

I don't understand what you're saying at all, and without any visual reference or anything, I'm just gonna assume it's not an actual issue. We don't even change how snow renders.

Here u can see the snow particles in the air turn gray/invisible in the area where the torch is lit.

I removed Dynamic Surroundings and its still there.

This seems to happen in vanilla, so it's neither I guess. Please test all options before making issue reports on things you're unsure of.

Well thx, but i really thought it can`t be vanilla cause it would be a huge issue xD

That's probably from Dynamic Surroundings