Application shortcuts not working for Flatpak browsers

[DeWir3]

I noticed that the Application shortcuts that Web App Manager creates for web apps with the flatpak version of Ungoogled Chromium do not work on my system. Trying to launch them generates the following error message:

Could not find the program '.local/share/flatpak/exports/bin/io.github.ungoogled_software.ungoogled_chromium'

The issue seems to be that those are relative paths to the executable. Manually adding ~/ or /home/<username>/ in front of the path in the Exec field of the .desktop-file fixes the error. If I interpret the common.py correctly, other flatpak browser probably have the same issue.

I am using EndeavourOS with KDE Plasma 6.2.4. I assume it works with those relative paths in some other environments, but using absolute paths will probably be more robust in this case.