Scene view is complete grey

Hello community

I am working with the Unity Version 2022.3.1f1 (LTS). I am working on a Windows PC and today I switched the build settings to MAC OS. This was a big mistake, I guess. My scene view is now gre

y. Like nothing is rendered.

But the objects are there I could edit them. I switched back the build settings to Windows. But the problem is still there. When I built a scene, the scene is working fine.

This is really strange.

Do you have an idea what is going on and have a solution in mind?

I am very thankful for any help.

Greetings
Toby

When I play the scene there is a black screen. Nothing is rendered. But all layers are set to be visible.