I have a bug like situation (windows, rhino 8, gtx 1080Ti), newest Nvidia drivers. My mesh object is not visible in the viewport (from time to time). After opening the file all is ok and after changing any option in preferences (even if not related) my mesh is not visible. I can select it. I can see it when I turn on wireframes but on shading mode is not visible. Any tips? After restarting I can see mesh in shading mode for a short while. Mesh is an inserted block (3d scan).
When I import a 3d scan instead of insert then all is ok. I would like to also to say that it could be related to turning off the mesh wireframe in shading mode. That`s where that started.
I wanted to use insert instead of import to not have big files during saving. I need to save often and if scans are included in 3dm then my hard drive is full quickly.