AIR 3.9.0.880 StageWebView and Retina MBP

Question

When I compile my app using AIR 3.9.0.880, my StageWebView is 1/4 size on my Retina MBP unless I pass true to the StageWebView constructor for the "useNative" parameter. Is this by design?
I have this set in my app descriptor:
<requestedDisplayResolution>high</requestedDisplayResolution>

Answer 1

1. It works fine in AIR 3.6,  3.7 and 3.8.
2. Yes, see code below.
3. I'm testing on a 15-inch Retina MacBook Pro running OS X 10.8.5.
Test code:
package
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.media.StageWebView;
import flash.geom.Rectangle;
[SWF(width="800", height="800")]
public class StageWebViewExample extends Sprite
    private var webView:StageWebView = new StageWebView();
    public function StageWebViewExample()
        webView.stage = this.stage;
        webView.viewPort = new Rectangle(0, 0, stage.stageWidth, stage.stageHeight);
        webView.loadURL("http://www.adobe.com/");
        stage.align = StageAlign.TOP_LEFT;
        stage.scaleMode = StageScaleMode.NO_SCALE;