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Created attachment 5845 [details]
Screenshot of 'Mono' application title
Consider this small testcase:
public class Program
public static int Main(string args)
Gtk.Application app = new Gtk.Application("org.example.GtkApplicationTest", GLib.ApplicationFlags.FlagsNone);
app.Activated += (sender, e) =>
if (app.Windows.Length > 0)
Gtk.Window window = new Gtk.Window("GtkApplicationTest");
window.Application = app;
return app.Run(0, null);
Expected result (unique application) is OK, is only has one issue: it shows 'Mono' as the application title (see attachment).
Gnome-shell is generating an "app name" based on the entry executable (which is Mono, since it's loading your managed exe).
You could also try renaming your executable. There are two ways to do this:
Pass the -a argument to exec in your launch script:
exec -a "MyAppName" mono myapp.exe
and by p/invoke prctl - see MD's unixSetProcessName:
You probably should do both, they each affect different things, and I'm not sure which will affect gnome-shell.
Ah thanks for your comprehensive solution, I've tried googling that but didn't find it. Sorry for incorrectly filing a bug!