FlexEvent.ENTER not firing on Android

[Erik J. Thomas]

The enter event on TextInput doesn't fire on Android, only iOS. Using mobile 
theme. Is this a known issue? This code for example:
<s:TextInput id="codeInput" returnKeyLabel="done" enter="onLookup()"/>
private function onLookup():void {
    // doesn't get called on android
}
The onLookup() event handler is not called when the user taps the "Done" button 
on the softkeyboard but again, this is only a problem on Android. iOS is fine. 

Ideas?

Thanks.

Erik