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.swt/src/org/eclipse/e4/ui/internal/workbench/swt/PartRenderingEngine.java
* @param context
	 *            the context for the part factories
	 */
	@PostConstruct
	void initialize(IEclipseContext context) {
		this.appContext = context;
		
		KeyFormatterFactory.setDefault(SWTKeySupport
				.getKeyFormatterForPlatform());
		
		context.set(IPresentationEngine.class.getName(), this);
		IRendererFactory factory = null;
		IContributionFactory contribFactory = context
				.get(IContributionFactory.class);
		try {
			factory = (IRendererFactory) contribFactory.create(factoryUrl,
					context);
		} catch (Exception e) {
			logger.warn(e, "Could not create rendering factory");
		}
		
		if (factory == null) {
			try {
				factory = (IRendererFactory) contribFactory.create(
						defaultFactoryUrl, context);
			} catch (Exception e) {
				logger.error(e, "Could not create default rendering factory");
			}
		}
		if (factory == null) {