public void testBug387234() {

		MApplication application = ApplicationFactoryImpl.eINSTANCE

				.createApplication();

		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();

		application.getChildren().add(window);

		application.setSelectedElement(window);

		MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();

		window.getChildren().add(stack);

		window.setSelectedElement(stack);

		MPart part = BasicFactoryImpl.eINSTANCE.createPart();

		stack.getChildren().add(part);

		stack.setSelectedElement(part);

		MWindow detachedWindow = BasicFactoryImpl.eINSTANCE.createWindow();

		window.getWindows().add(detachedWindow);

		MPartStack detachedStack = BasicFactoryImpl.eINSTANCE.createPartStack();

		detachedWindow.getChildren().add(detachedStack);

		detachedWindow.setSelectedElement(detachedStack);

		application.setContext(appContext);

		appContext.set(MApplication.class.getName(), application);

		wb = new E4Workbench(application, appContext);

		wb.createAndRunUI(window);

		stack.getChildren().remove(part);

		detachedStack.getChildren().add(part);

		detachedStack.setSelectedElement(part);

		assertTrue("Detached window should be rendered",

				detachedWindow.isToBeRendered());

		assertTrue("Detached stack should be rendered",

				detachedStack.isToBeRendered());

		assertTrue("Part should be rendered", part.isToBeRendered());

		Shell shell = (Shell) detachedWindow.getWidget();

		shell.close();

		spinEventLoop(); // process pending events

		assertFalse("Detached window should not be rendered",

				detachedWindow.isToBeRendered());

		assertFalse("Detached stack should not be rendered",

				detachedStack.isToBeRendered());

		assertFalse("Part should not be rendered", part.isToBeRendered());

		assertNull("Selected element should be null",

				detachedStack.getSelectedElement());

		assertNull("Selected element should be null",

				detachedWindow.getSelectedElement());

	}