We need to unset the propagation limit on the focus
controller, else we miss the focus-in when the focus
enters the popover upon initial popup, when it comes
from the parent button.
gtk_widget_add_controller (GTK_WIDGET (self), controller);
controller = gtk_event_controller_focus_new ();
+ gtk_event_controller_set_propagation_limit (controller, GTK_LIMIT_NONE);
g_signal_connect (controller, "enter", G_CALLBACK (focus_in_cb), NULL);
gtk_widget_add_controller (GTK_WIDGET (self), controller);