cmd-h and cmd-, not working in Mojave guest on Catalina host

Even though I have Parallels 15.1.2 (47123) preferences set to always send system shortcuts to the guest:


I'm finding that my Mojave 10.14.6 guest is not actually receiving cmd-h or cmd-, (for example) when I am focused on the guest. It simply hides the Mojave guest and brings up Parallels' preferences instead of the active guest + app...