I added profile switching with Windows 10, and it still seems to work ok for me (tried it just now). I have to actually click on the desktop to change focus. Also, it's, 'Program Manager' and not, 'Program Manger' if that makes any difference.
I also get, 'Program Manager' when I write {ACTIVEWINDOWTITLE} after the desktop is clicked. Make sure you're not running something like TeamViewer, as that can cause issues.