When I try to search for a filename, I've recently started getting "No items match your search" when I try to find files with names that match. This used to work fine and I'm not sure when it stopped working, but I think it was within the past couple months.
I tried rebuilding the Windows search index days ago but that didn't solve it. I also tried upgrading from Windows 10 version 1809 to 1909 but that didn't solve it either.