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.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/PartServiceImpl.java
return workbenchWindow;
		if (application.getSelectedElement() != null)
			return application.getSelectedElement();
		List<MWindow> windows = application.getChildren();
		if (windows.size() != 0)
			return windows.get(0);
		return null;
	}
	private MContext getParentWithContext(MUIElement part) {
		MElementContainer<MUIElement> parent = part.getParent();
		MUIElement intermediate = parent;
		while (parent != null) {
			if (parent instanceof MContext) {
				if (((MContext) parent).getContext() != null)
					return (MContext) parent;
			}
			intermediate = parent;
			parent = parent.getParent();
		}
		MPlaceholder placeholder = modelService.findPlaceholderFor(getWindow(), intermediate);
		parent = placeholder.getParent();
		while (parent != null) {
			if (parent instanceof MContext) {
				if (((MContext) parent).getContext() != null)
					return (MContext) parent;
			}
			parent = parent.getParent();
		}
		return null;
	}