How to make Safari work with CORS html2canvas correctly?

Question

safari

Please tell me how to make Safari work with CORS. c in the finished "screenshot" the image is missing.

$scope.htmlToPDF = function(html, name) {
        if (name === undefined) {
            name = 'file.pdf';
        }


        html2canvas(html, {
            logging: true,
            useCORS: true,
            onrendered: function (canvas) {
                var img = canvas.toDataURL("image/png")
                var doc = new jsPDF();
                doc.addImage(img, 'PNG', 15, 0, 180, 0);

                setTimeout(function(){
                    doc.save(name);
                }, 1000);
            }
        });
    };

In chrome it works in 90% of cases, FF seems to always work. Doesn't work in Safari at all.