Phaser WebGL lineWidth Scaling Problem

[Agerenon]

I don't know if this is a Phaser (or maybe PIXI) bug or simply my misuse of Phaser, so I thought I'd check with people on the forum first before submitting to Phaser github.

The following simple code snippet behaves differently in Phaser 2.6.1 depending upon whether you set it to use WebGL or the canvas.  And it appears to be an issue with lineWidth.

//var mode = Phaser.AUTO;
var mode = Phaser.CANVAS;
//var mode = Phaser.WEBGL;

var game = new Phaser.Game(200, 200, mode, 'test', { create: create });

function create() {

    game.world.setBounds(0,0,200,200);

    var box = game.add.graphics(0,0);

    box.lineStyle(.1,0xffffff,1);
    box.beginFill(0x008800);
    box.drawRect(0,0,1,1);
    box.endFill();
    box.scale.set(100);
}

If you run this snippet using CANVAS (as shown), then you get:

If you run this snippet using WEBGL, then you get:

 

In the first case, the outline and fill are appropriately together.  In the second, the outline is offset from the fill, and apparently misplaced.  From my characterization of the problem, it appears that the WebGL code is assuming that the lineWidth is an integer value, basically setting it to 1 given the offset of the box outline relative to its fill.

Should I file this as a bug with Phaser?