Flash vs HTML5 graphics stroke drawing differences

[Andras Csizmadia]

What steps will reproduce the problem?
Try to draw a graphics shape with fill and stroke.

What is the expected output? What do you see instead?
Flash and HTML5 render output should be the same.

Instead I get:
HTML5 hair line stroke does not rendered correctly. Please see attached screenshot.

What version of the product are you using? On what operating system?
NME 3.3.3 and Windows 7

Please provide any additional information below.
# Line style
colorType=GraphicsTextureType.SOLID;
thickness=1;
hinting=true;
scaleMode=LineScaleMode.NONE;
caps=CapsStyle.NONE;
joints=JointStyle.MITER;
miterLimit=3;

[Niel Drummond (niel-drummond)]

the problem does not seem to be the hairline, but the enclosing button.

[Andras Csizmadia (andras.csizmadia)]

I've attached an another screenshot.

[Andras Csizmadia (andras.csizmadia)]

And here is the sample script which i've compiled:

package;

import flash.display.DisplayObject;
import flash.display.Graphics;
import flash.display.Shape;
import flash.display.Sprite;

class GraphicsExample extends Sprite {

    public function new(){
        super();
        flash.Lib.current.addChild(this);

        var size:Int = 30;
        for(i in 1...10){
            var child = doDrawRect(size,0x00FF00,i,0xFF0000);
            child.x=size;
            child.y=i*(size + 20);
        }
    }

    private function doDrawRect(size:Float, bgColor:Int,borderSize:Float,borderColor:Float):Shape {
        var child:Shape=new Shape();
        child.graphics.beginFill(bgColor);
        child.graphics.lineStyle(borderSize, borderColor);
        child.graphics.drawRect(0, 0, size, size);
        child.graphics.endFill();
        addChild(child);
        return child;
    }
}

With the current build i dont see strokes at all with html5, flash is okay..

[Tom Byrne (09rp9wq1q1h0-nnc-anzd5soo2sh5)]

I believe what is happening here is that the stroke is below the fill.
If you set the stroke thickness to 10, it will appear to be 5px thick (as half of it is underneath the fill).