Gtk.WindowPosition.CENTER ignored

[Andrea Giammarchi <andrea giammarchi gmail com>]

I've noticed both OSX (quartz or ZQuartz) and GNOME 3.20 (Linux archibold 4.4.5-1-ARCH #1 SMP PREEMPT Thu Mar 10 07:38:19 CET 2016 x86_64 GNU/Linux) seem to completely ignore this parameter.

# bash and gjs

gjs -c '

const Gtk = imports.gi.Gtk;

Gtk.init(null);

const win = new Gtk.Window({

  type: Gtk.WindowType.TOPLEVEL,

  window_position: Gtk.WindowPosition.CENTER

});

win.connect("show", Gtk.main);

win.connect("destroy", Gtk.main_quit);

win.add(new Gtk.Label({label: "centered?"}));

win.set_default_size(200, 80);

win.show_all();

'

I haven't tested other platforms but it used to work ('till yesterday when I've switched from GNOME 3.18 to 3.20)

Is this a known issue? Am I doing it wrong?

Thanks in advance for any sort of outcome.

Best Regards