Bug 321116 [Compatibility] Secondary workbench windows are not restored with the menu bar or the tool bar
I20100727-1520 1. Window > New Window 2. File > Exit 3. Start Eclipse up again. 4. Notice that one of the workbench windows doesn't have a menu bar or a tool bar.
bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/PartRenderingEngine.java
fixZOrder(changedElement);
				}
			} else {
				Activator
						.trace(Policy.DEBUG_RENDERER, "visible -> false", null); 
				
				removeGui(changedElement);
			}
		}
	};
	private EventHandler trimHandler = new EventHandler() {
		public void handleEvent(Event event) {
			Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
			if (!(changedObj instanceof MTrimmedWindow))
				return;
			MTrimmedWindow window = (MTrimmedWindow) changedObj;
			if (window.getWidget() == null)
				return;
			String eventType = (String) event
					.getProperty(UIEvents.EventTags.TYPE);
			if (UIEvents.EventTypes.ADD.equals(eventType)) {
				MUIElement added = (MUIElement) event
						.getProperty(UIEvents.EventTags.NEW_VALUE);
				if (added.isToBeRendered())
					createGui(added, window.getWidget(), window.getContext());
			}
		}
	};
	private EventHandler childrenHandler = new EventHandler() {
		public void handleEvent(Event event) {