Weird brightness changing during play

[MoonMoon]

You're not talking about the night vision effect, are you? The one where if you stand in complete darkness, the area around you starts to illuminate? If you stand in the light and look into a dark area, it will not use this night vision effect, so it will remain as dark as a black hole.

No,In fact, the night vision effect is not even present. If I remembered correctly,the area is illuminating in blue colour,right? Well,it doesn't show for me