compiz scale all does not minimize window list popup

 When I use roll the mouse wheel and the scale starts, the previous group button's popup window list stays open. after the scale, I need to go back to the group button to get it to disappear. Please close the group button popup on scale, thanks.

This does the trick:
def compiz_scale_all(self, widget, event):
    gobject.timeout_add(settings['popup_delay']+ 200, self.hide_list_no_check)
    compiz_call('scale/allscreens/initiate_key','activate','root', self.root_xid)