@Inject @Optional
void modelLoadedHandler(@UIEventTopic(STUConstants.UI_TOPIC_CONFIG_LOADED) Object nothing) {        
    

    //Close open config parts
    MPartStack stack = (MPartStack) modelService
            .find(STUConstants.PART_STACK_ID_CONFIG_VIEW,
                    application);
    List<MStackElement> parts = new ArrayList<>(stack.getChildren());

    MPart mpart;
    for (MStackElement element : parts) {
        mpart = (MPart) element;

        log.error("Removing part {} visible {}", mpart.getElementId(), mpart.isVisible());
        partService.hidePart(mpart, true);
    }

    // Adding this make it work regardless of which perspective is 
    // active. Otherwise parts are only gone is the active perspective is 
   // Configuration
    stack.getChildren().clear();
}