Whenever you click on the shift key the keyboard language text disappears

[anaximeno]

 * slick-greeter 1.8.2
 * Distribution -LMDE 6
 * 64 bit

Issue & Steps to reproduce

Whenever you click at the shift key the keyboard language text in the menu bar on the top disapears.

Expected behaviour

The text of the keyboard language should not disapear.

[anaximeno]

I believe this line is causing this problem for some reason, but I don't know how to test changes on this project yet:

slick-greeter/src/menubar.vala

Lines 538 to 545 in 3a96f85

	var xapp_controller = new XApp.KbdLayoutController();
	var display = get_display ();
	var keymap = Gdk.Keymap.get_for_display (display);
	keymap.state_changed.connect (() =>
	{
	label.set_label(xapp_controller.get_current_short_group_label());
	item.set_tooltip_text(_("Keyboard layout:").concat(" ").concat(xapp_controller.get_current_name()));
	});