I followed the instructions. No difference. I have more information: I can reproduce the issue just by running the program ImageGlass. You can get it free here: https://imageglass.org
1. Run ImageGlass (just start it from the desktop icon)
2. Exit ImageGlass
3. Pass your mouse over any desktop icons and any icons you pass over will suddenly have a black background.
4. Right click on the desktop and select refresh and your entire wall paper becomes black
5. Wait about 60 seconds and right click again and select refresh - your entire desktop will repaint and things will be normal - for a while.
Note: It's not just imageglass, sometimes I just look at properties of certain icons, or change an icon through properties and the problem starts.