Fabric JS Image Shadow on Chrome

shadows on images rendered to canvas have the ability to blur in any browser, except Chrome. Any fix for this?

by codert

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/2.7.0/fabric.min.js"></script>
Shadows on transparent PNGs will blur for FireFox, IE &amp; Safari, but not in Chrome.
<br>
<canvas id="testcanvas" width="500" height="570"></canvas>

<input type="range" min="1" max="10" onchange="changeOffsetX">

CSS

body {
    font-family: arial,helvetica;
}
#testcanvas {
    border: 3px solid #990000;
}

JavaScript

var img = new Image();
img.crossOrigin = 'anonymous';
img.src = 'http://ad-factory.s3.amazonaws.com/shirt-test.png';
img.onload = function () {
    var canvas = new fabric.Canvas('testcanvas', {
    	skipTargetFind: true
    });
    var imgElement = document.getElementById('testimage');
    var imgInstance = new fabric.Image(img, {
        crossOrigin: 'anonymous',
        left: 10,
        top: 10,
        angle: 0
    });
    imgInstance.lockUniScaling = true;
    imgInstance.setShadow({
        blur: 10,
        color: 'rgba(0,0,0,0.5)',
        offsetX: 10,
        offsetX: 5
    });
    canvas.add(imgInstance);
    window.imgInstance = imgInstance;
    window.canvas = canvas;
};

window.changeOffsetX =function() {
	console.log(imgInstance.shadow);
}