Ambient Lighting Broken

I opened my creative today - and it’s gone all sepia and VERY dark (I can’t see dark skins inside a building).

On top of that my Sky Dome is gone, and of the almost non-existent now remaining controls, I’ve made it as bright as possible and it’s still completely unusable.

Any hints?

Skylight does most of the ambient lighting, but that can be blocked by distance field AO or lumen GI.

It’s impossible to know what’s going wrong without seeing what your scene looks like and knowing your lighting setup.