Sounds more Windowy than Notepaddy.
There's a multipage thread you've probably found about similar issues with various suggestions, here:
answers.microsoft.com/en-us/windows/forum/windows_10-performance-winpc/windows-10-blank-dialog-boxes-plank-popup-menus/9fea39fe-f911-431b-8bb4-532820e8513d
Of which the most succinct is:
"Using the Display Driver Uninstaller and then installing the latest video drivers fixed it for me."
But there are other suggestions, depending on what hardware you have and what you're doing. Maybe some clues in there?
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Notepad new
Notepad new