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 List<MPart> activatedParts = new ArrayList<MPart>();
		private List<MPart> deactivatedParts = new ArrayList<MPart>();
		private List<MPart> hiddenParts = new ArrayList<MPart>();
		private List<MPart> visibleParts = new ArrayList<MPart>();
		private int activated = 0;
		private int deactivated = 0;
		private int hidden = 0;
		private int visible = 0;
		private boolean valid = true;
		public void clear() {
			activated = 0;
			deactivated = 0;
			hidden = 0;
			visible = 0;
			activatedParts.clear();
			deactivatedParts.clear();
			hiddenParts.clear();
			visibleParts.clear();
			valid = true;
		}