Need help with graphics problem

Not only are my arrows mere outlines, but my Gizmos DrawSpheres are as well. I can’t work like this. Can anyone help me get this back to normal? I can’t see the grid, either, even though it’s turned on.

I’m not sure why the picture didn’t post, but here’s the link.

Start by resetting the layouts (upper right), then try close / open Unity, perhaps even a reimport all.

Please note for the future that the 2D forum isn’t the place for this which is supposed to be for 2D features.

Perhaps a more appropriate forum would be General Editor.