Strange geometry/bug showing in technical/artistic/pen views

[John_Brock]

There are no bad objects in the file.

Your file display correctly in Rhino for Windows in all display modes.
Your file displays correctly in Rhino for Mac in all display modes on an Intel CPU MacBook Pro with an AMD GPU running Monterrey.

These observations add credence to the thought that the problem is with the OpenGL drivers supplied by Apple through Rosetta on the Silicon Macs.

My best suggestion is for you to try the V8 WIP which is a native Silicon application, and supports the new Metal display tools.

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