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Test Info:

<!DOCTYPE html>
<html>
<head>
<script>
function boom()
{
var canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
var canvas2d = canvas.getContext('2d');
canvas2d.rect(0, 0, 1, 1);
canvas2d.transform(1, 0, 0, 1, 0, 0);
canvas.setAttributeNS(null, "height", "99");
canvas2d.rect(0, 0, 1, 1);
}
</script>
</head>
<body onload="boom();"></body>
</html>