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 visibilityHandler = new EventHandler() {
		public void handleEvent(Event event) {
			MUIElement changedElement = (MUIElement) event
					.getProperty(UIEvents.EventTags.ELEMENT);
			if (!(changedElement.getWidget() instanceof Control))
				return;
			Control ctrl = (Control) changedElement.getWidget();
			MElementContainer<MUIElement> parent = changedElement.getParent();
			if (parent == null)
				return;
			AbstractPartRenderer renderer = (AbstractPartRenderer) parent
					.getRenderer();
			if (renderer == null)
				return;
			
			if (changedElement.isVisible()) {
				
				
				Composite realComp = (Composite) renderer
						.getUIContainer(changedElement);
				ctrl.setParent(realComp);
				fixZOrder(changedElement);
				renderer.childRendered(parent, changedElement);
			} else {
				
				ctrl.setParent(getLimboShell());
				renderer.hideChild(parent, changedElement);
			}