This is in Material Preview shading mode. As you can see the colors chosen in the nodes do not correspond the one showing in the viewport for the sphere. Same thing for the Object Properties/Viewport Display. If I apply a 2 nodes material then it’s ok. But there is something with these set of nodes that won’t pass the color chosen in the nodes to the object. It did belong to a more complex set of nodes. This one is a simplified iteration (for troubleshooting).
This is in Solid shading mode:
Can someone pls inspect the .blend file? badmaterial.blend (833.8 KB)