[Openfl] BitmapData.draw can not use BlendMode

[1112]

Hai.

BitmapData(openfl.display.BitmapData) can not use BlendMode.

package;
import flash.display.BlendMode;
import openfl.geom.Matrix;
import openfl.display.Sprite;
import openfl.display.Bitmap;
import openfl.display.BitmapData;
import openfl.Assets;

class Main extends Sprite{

	public function new () {
		super();

		openfl.Lib.current.stage.color = 0xFF808080;
		
		var trans1:BitmapData = Assets.getBitmapData("assets/015.png");
		var trans2:BitmapData = Assets.getBitmapData("assets/029.png");
		
		// case Bitmap BlendMode
		var obj:Bitmap = new Bitmap(trans2.clone());
		obj.blendMode = BlendMode.MULTIPLY;

		addChild(new Bitmap(trans1));
		addChild(obj);

		// case draw BlendMode
		var obj2:BitmapData = trans1.clone();
		obj2.draw(trans2, new Matrix(), null, BlendMode.MULTIPLY);

		var obj2_Bitmap:Bitmap = new Bitmap(obj2);
		obj2_Bitmap.x = obj.width;
		addChild(obj2_Bitmap);
		
	}
}

left is Object blendMode,
right is BitmapData.draw blendMode