Почему concatenatedMatrix не единична?

[Korchy]

Откуда масштаб?

package Tmp {
	import flash.display.Sprite;
//-----------------------------
	public class Tmp extends Sprite {
//-----------------------------
		private var a:Sprite;
//-----------------------------
		public function Tmp() {
			a = new Sprite();
			trace(transform.matrix.toString());
			trace(transform.concatenatedMatrix.toString());
			trace(a.transform.matrix.toString());
			trace(a.transform.concatenatedMatrix.toString());
		}
	}
}

вывод:
D:\Programms\Flash\Tmp\Src\Tmp.fla:
(a=1, b=0, c=0, d=1, tx=0, ty=0)
(a=1, b=0, c=0, d=1, tx=0, ty=0)
(a=1, b=0, c=0, d=1, tx=0, ty=0)
(a=5, b=0, c=0, d=5, tx=0, ty=0)