I had the same problem. Clearing the icon cache fixed it. Search Google for 'windows 10 clear icon cache'. On Windows 10 there are 2 folders that have cache files, previous versions of windows only had one file so make sure the instructions include both folders.
I have the same issue. Very annoying to look at this black square. I've rebuilt the icon cache and also the thumbnail cache, but nothing seems to work. I've also unpinned, and repinned, and also uninstalled and reinstalled Photoshop, to no avail. very annoying can you please fix this??