Since I installed Windows 11, I have the same problem as you. From time to time, when I maximize/minimize some application, or when I update a browser for example, the desktop icons flicker, as if they wanted to be displayed above the rest of the windows. The same happens with the context menu when you right-click, which gives the feeling that it wants to show something else before showing the final context menu. Not long ago I read that this behavior is a defect of Windows 11 itself and how it is programmed using XML language (sorry, I could not find the link where this was explained).
