Listening to click on Application

Steps to reproduce:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="1024" minHeight="768" click="application1_clickHandler(event)">

<mx:Script>
<![CDATA[
import mx.controls.Alert;
protected function application1_clickHandler(event:MouseEvent):void
{
// TODO Auto-generated method stub
if(event.target == this)
Alert.show("Application clicked");
}
]]
>
</mx:Script>

</mx:Application>

a code like this in 3.4 gives the alert and it gives in sdk4.0.0.10000 also. In the sdk 4.0.0.10342 this does not give the alert as all points belong to ContainerBorderSkin.

Actual Results:
In the sdk 4.0.0.10342 this does not give the alert

Expected Results:
Alert should come

Workaround (if any):