 
         _percentHeight = value;
 
-        invalidateParentSizeAndDisplayList();
+        invalidateParentSizeAndDisplayList(true);
     }
 
     //----------------------------------


        // We invalidate size because locking in height
        // may change the measured width in flow-based components.
        invalidateSize();
        invalidateParentSizeAndDisplayList();

        dispatchEvent(new Event("explicitHeightChanged"));
    }

     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    protected function invalidateParentSizeAndDisplayList(estimatedSizeChanged:Boolean = false):void
    {
        if (!includeInLayout)
            return;
