(mousepad:7215): Gtk-CRITICAL **: gtk_bin_remove: assertion 'priv->child == child' failed

(mousepad:7215): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(mousepad:7215): GLib-GObject-CRITICAL **: g_signal_emit_by_name: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

Thread 1 "mousepad" received signal SIGSEGV, Segmentation fault.
0x00007ffff629288d in g_type_check_instance () from /usr/lib/libgobject-2.0.so.0