Bug 314641 Parts in stacks do not show any content until you switch parts around
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackRenderer.java
public static final String TAG_VIEW_MENU = "ViewMenu"; 
	Image viewMenuImage;
	@Inject
	IStylingEngine stylingEngine;
	@Inject
	IEventBroker eventBroker;
	@Inject
	IPresentationEngine renderer;
	private EventHandler itemUpdater;
	private EventHandler dirtyUpdater;
	private boolean ignoreTabSelChanges = false;
	private class ActivationJob implements Runnable {
		public MElementContainer<MUIElement> stackToActivate = null;
		public void run() {