spark.primitives.Graphic not displayed within UIComponent

Steps to reproduce:
1. Create a Graphic object which contains a Path with its data property set
2. Add the Graphic object as a child of a UIComponent (I used an instance of UIComponent)
3. Add the UIComponent as an element of a Spark Application

Actual Results:
The Graphic's path is not displayed

Expected Results:
The path is displayed

Workaround (if any):
Adding the Path to a Group, instead of a Graphic, allows the Path to be shown properly.

---------------Example to reproduce ----------------------------------

<s:Application creationComplete="init()">

<fx:Script>

<![CDATA[

import mx.core.UIComponent;
import mx.graphics.SolidColor;

import spark.primitives.Graphic;
import spark.primitives.Path;

private function init():void

{ var path : Path = new Path(); path.data = "M 0.0 0.0 L 100 0 L 100 100 L 0 10 L 0 0 Z"; path.fill = new SolidColor(0x030304); var graphic : Graphic = new Graphic(); graphic.addElement( path ); // This code displays the graphic correctly. addElement( graphic ); // When I add the graphic to a UIComponent, and add that to the stage, nothing is shown // var content : UIComponent = new UIComponent(); // content.addChild( graphic ); // addElement( content ); }

]]
>

</fx:Script></s:Application>