How do I turn off the polygon guide that only seems to appear in the Stage (SOP create) context?

Stage context (SOP create)



Geo context



Thanks in advance!

The reason for it is that you have "ghost other objects" turned on for the viewport.

Unless it's set to "Hide other objects" you're also seeing the LOPs display, currently USD curves default
to a width of 1 if not specified, which is why the large ribbons appear.