It disappears or gets dimming when I change the shadows from sun/moon + projector to None.
It keeps the light level and the vision when I change the shadows from sun/moon (NO PROJECTOR) to None.
It seems the ambient occlusion and depth of fields are affected, because when both are on, this didn't happen.
I took a video because it's easier to show than screenshots. I couldn't upload video here, so I made a link: https://drive.google.com/file/d/1r3FSMm61b3bdQvqt93HNth47A9E4oIde/view?usp=drive_link