Changes made to the Exec entry for a .desktop file can result in an invalid entry: For example, with this input: [Desktop Entry] Name=egmde (confined) Comment=The example Mir server Exec=snap run egmde-confined-desktop Type=Application The result is: $ cat /snap/egmde-confined-desktop/current/meta/gui/egmde-confined-desktop.desktop [Desktop Entry] Name=egmde (confined) Comment=The example Mir server Exec=egmde-confined-desktop run egmde-confined-desktop Type=Application $ cat /var/lib/snapd/desktop/applications/egmde-confined-desktop_egmde-confined-desktop.desktop [Desktop Entry] X-SnapInstanceName=egmde-confined-desktop Name=egmde (confined) Comment=The example Mir server Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/egmde-confined-desktop_egmde-confined-desktop.desktop /snap/bin/egmde-confined-desktop run egmde-confined-desktop Type=Application But trying to run `env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/egmde-confined-desktop_egmde-confined-desktop.desktop /snap/bin/egmde-confined-desktop run egmde-confined-desktop` will fail: $ env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/egmde-confined-desktop_egmde-confined-desktop.desktop /snap/bin/egmde-confined-desktop run egmde-confined-desktop realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory realpath: '': No such file or directory Unknown command line options: run egmde-confined-desktop