Every few weeks the screen on my Macbook Pro 16" starts doing this:

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It happens only with some windows and sometimes the only thing that helps is restart. I went to the Apple store and they just told me to reinstall macOS which I don't really want to do as 1/ I don't have time for that, and 2/ I don't believe it will help.

Could this be a graphic card issue? Is this known issue?

enter image description here

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