Unable to launch Flatpak and Snap apps from the App Menu on Debian


I have an issue where I could not get a Flatpak or Snap app to launch on any Debian based templates. I can still launch them manually via the terminal just fine, but I don’t know why clicking on their icons in the App Menu doesn’t work. This is not reproducible on Fedora - everything on Fedora works as expected.

I wonder if anyone has the same issue and if they have figured out a solution for it?

What if you launch the .desktop file from terminal?
gtk-launch app-name
And check the desktop file. Maybe add full path to app binary in Exec=