For example - if I open telegram desktop from within Debian desktop, a new card opens in Sailfish, with telegram desktop app open. This is the terminal output : (kdeconnect-app:5194): Gdk-WARNING **: 14:55:50.385: The Wayland compositor does not provide any supported shell interface, not using Wayland display Could not create scene graph context for backend 'customcontext' - check that plugins are installed correctly in /usr/lib/aarch64-linux-gnu/qt5/plugins kf.kirigami: Warning: Theme implementations should use Kirigami.BasicThemeDefinition for its root item kf.kirigami: Failed to find a Kirigami platform plugin kf.kirigami: Units.devicePixelRatio is deprecated (since 5.86 ): This returns 1 when using Qt HiDPI scaling. qt.qpa.wayland: "wl-shell" is a deprecated shell extension, prefer using "xdg-shell-v6" or "xdg-shell" if supported by the compositor by setting the environment variable QT_WAYLAND_SHELL_INTEGRATION qt.qpa.wayland: Minimizing is not supported on wl-shell. Consider using xdg-shell instead. But when the start_desktop sh script used to work, that app would open in the same desktop. I can't figure out the difference ...