How to tell SPARK scroll bar in TextArea to recalculate?
===

I have problem with vertical scroll in SPARK text area. I've added simple code in creation complete to insert 200 lines in text area:

    private function creationCompleteHandler(event:FlexEvent):void
    {
      for (var iind:uint = 1; iind < 200; iind++)
      {
        testTextArea.text += iind.toString() + "\n";
      }
    }

And when I start application I noticed that the last 10% (approximately) of scroll bar is "a free walk". When scroll is on 90% page is scrolled all the way down, and when I move thumb of the scroll bar in last 10% of scroll bar nothing moves.

This is all until I change text in text area in browser, then scroll bar acts normal.
