UserAgent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Steps to reproduce the problem:
I tried convert SVG to PNG. I'm using to that html canvas. SVGs had images inside.
<pre>
ctx = canv.getContext('2d');
	ctx.fillStyle = "#ffffff";
	ctx.fillRect(0, 0, String(canv.width), String(canv.height));
	ctx.fillStyle = "#435a6b";
	ctx.font = "15px Georgia";

	$.each(svgs, function (k, v) {
		var svgURL = new XMLSerializer().serializeToString(svgs[k]);
		img  = new Image();
		img.onload = function() {
			if (subprocesses[k].name == '_main') {
				ctx.fillText(workflowname, 10, offSetHeigth + 15);
			} else {
				ctx.fillText("Podproces: " + subprocesses[k].label, 10, offSetHeigth + 15 );
			}
			offSetHeigth = offSetHeigth + 15;
			var height = svgs[iterator].style.minHeight.replace(/[^-\d\.]/g, '');
			ctx.drawImage(this, 0, offSetHeigth);
			var images = svgs[iterator].querySelectorAll('image');
			for (var i = 0; i < images.length; i++) {
				var imgs = new Image();
				imgs.src = images[i].href.baseVal;
				ctx.drawImage(imgs, images[i].x.baseVal.value, images[i].y.baseVal.value + offSetHeigth, images[i].width.baseVal.value, images[i].height.baseVal.value);
			}
			var link = document.createElement("a");
			iterator++;
			if (iterator == svgs.length) {
				link.href = canv.toDataURL("image/png").replace(/^data:image\/[^;]/, 'data:application/octet-stream');
				link.download = workflowname + ".png";
				document.body.appendChild(link);
				link.click();
				document.body.removeChild(link);
				$.ithrobber.hide_throbber();
				link.remove();
				$.each(svgs, function (k, v) {
					svgs[k].remove();
				});
			}
			offSetHeigth = offSetHeigth + Number(height);
		};
		img.src = 'data:image/svg+xml; charset=utf8, ' + encodeURIComponent(svgURL);
	});
</pre>

What is the expected behavior?
Ignore or correct serialized imges in SVG.

What went wrong?
In december 2016 images in SVG was ignore. Now when i serialized SVG with images, i had "not loaded icon" when was images. (delegacje.png and delegacje(4).png) In delegacje.png imges from SVG was drawed manually. delegacje(4) without drawing manually.

Did this work before? Yes December 2016

Chrome version: 56.0.2924.87  Channel: stable
OS Version: 6.3
Flash Version: Shockwave Flash 24.0 r0

That was look (correct.png) at firefox now and chrome in December