AIR InvokeEvent Bug?

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" 
	layout="absolute" width="400" height="300" creationComplete="minimizeToDock()">
	<mx:Label text="Dockable" horizontalCenter="0" verticalCenter="0">
	</mx:Label>
	<mx:Script>
		<![CDATA[
			
			private function minimizeToDock():void{
				nativeWindow.addEventListener(Event.CLOSING, function(event:Event):void{
					event.stopImmediatePropagation();
					event.preventDefault();
					nativeWindow.visible = false;
					nativeApplication.addEventListener(InvokeEvent.INVOKE, function(event:InvokeEvent):void{
						trace(" Invoking...");
						nativeWindow.visible = true;
					});
					
				});
			}
			
		]]>
	</mx:Script>
</mx:WindowedApplication>