Bug 329482 Uninstantiated part may be rendered when closing another part in the same stack
1. Activate the 'Javadoc' view. 2. Activate the 'Package Explorer' view. 3. Shutdown. 4. Restart. 5. Ctrl+3 > Properties 6. Hide the 'Properties' view. 7. Now the 'Problems' view is the selected element. It should be the 'Javadoc' view.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
private IEclipseContext applicationContext;
	private IPresentationEngine engine;
	@Override
	protected void setUp() throws Exception {
		applicationContext = E4Application.createDefaultContext();
		super.setUp();
	}
	protected String getEngineURI() {
		return "platform:/plugin/org.eclipse.e4.ui.tests/org.eclipse.e4.ui.tests.application.HeadlessContextPresentationEngine"; 
	}
	@Override
	protected void tearDown() throws Exception {
		super.tearDown();
		applicationContext.dispose();
	}
	private IPresentationEngine getEngine() {
		if (engine == null) {
			IContributionFactory contributionFactory = (IContributionFactory) applicationContext