Bug URP Shader Graph not displaying main preview?

Hello

It seems I am having some problems with the main preview in the shader graph. It is not necessarily a major issue, since my work is still being applied to the material. It's just a bit annoying since I have to switch to scene view all the time to see what is happening to the object that the material is applied to.

The main preview just displays a grey color. It seems to update when I make changes in the shader graph editor, but it just stays this grey colored square. I've tried selecting different preview display meshes but no change. I've also tried with new projects and updating Unity and it doesn't fix it.

How to fix this?

 

I realized the model will display if I set the surface type to transparent. But as long as it's on "Opaque" I just see the grey square without any model displayed