I tried reproducing this and I can get similar glitches on my iMac with the AMD 6970M running 3ds Max 2017 through Boot Camp.
A few questions:
-When does this most often occur? For me it seems to happen when I start clicking on different Textplus objects.
-For me the glitches go away if I change the Viewport driver to “Nitrous Direct3D 9”. Try the same change. If it remains, work your way down the list to see if any setting has any impact
-Can you provide a system information file? I’ll log this one with development after I gather more info
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