Bug 326699 Part in shared area finds wrong parent context during shutdown
Build: 4.1 M2. After working for a couple of days, I attempted to shutdown and got an NPE. I was unable to close the application normally and had to kill the process. Complete log to follow but here is a snippet: java.lang.NullPointerException at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1322) at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:1059) at org.eclipse.ui.internal.WorkbenchWindow.access$9(WorkbenchWindow.java:1038) at org.eclipse.ui.internal.WorkbenchWindow$6.run(WorkbenchWindow.java:1085) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/PartRenderingEngine.java
}
	};
	private EventHandler trimHandler = new EventHandler() {
		public void handleEvent(Event event) {
			Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
			if (!(changedObj instanceof MTrimmedWindow))
				return;
			MTrimmedWindow window = (MTrimmedWindow) changedObj;
			if (window.getWidget() == null)
				return;
			String eventType = (String) event
					.getProperty(UIEvents.EventTags.TYPE);
			if (UIEvents.EventTypes.ADD.equals(eventType)) {
				MUIElement added = (MUIElement) event
						.getProperty(UIEvents.EventTags.NEW_VALUE);
				if (added.isToBeRendered())
					createGui(added, window.getWidget(), window.getContext());
			} else if (UIEvents.EventTypes.REMOVE.equals(eventType)) {
				MUIElement removed = (MUIElement) event
						.getProperty(UIEvents.EventTags.OLD_VALUE);
				if (removed.getRenderer() != null)
					removeGui(removed);
			}
		}
	};
	private EventHandler childrenHandler = new EventHandler() {
		public void handleEvent(Event event) {
			Object changedObj = event.getProperty(UIEvents.EventTags.ELEMENT);
			if (!(changedObj instanceof MElementContainer<?>))
				return;