Bug 327033 Workbench doesn't relayout after a stack disappears
If you close all the views of a stack, you just get an empty rectangle of space now. Resizing your window will adjust the layout properly. Note that reopening the views don't help, you still have to resize something to force a layout.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/SashRenderer.java
@Inject
	private IEventBroker eventBroker;
	private static final int UNDEFINED_WEIGHT = -1;
	private static final int DEFAULT_WEIGHT = 100;
	private EventHandler sashOrientationHandler;
	private EventHandler sashWeightHandler;
	private EventHandler visibilityHandler;
	public SashRenderer() {
		super();
	}
	@PostConstruct
	void postConstruct() {
		sashOrientationHandler = new EventHandler() {
			public void handleEvent(Event event) {
				
				Object element = event.getProperty(UIEvents.EventTags.ELEMENT);
				if (!(element instanceof MPartSashContainer)) {