Inline html for text (non-html mode) does not render properly with getimagedata

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style></style>
</head>

<body>
  <div id='myChart'></div>
  <img id="output" src="">
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      type: "null",
      labels: [{
        x: 100,
        y: 100,
        height: 100,
        text: '<span style="color:#5792F1">Apple</span><br><span style="color:#5792F1; font-size: 24px">19.85%</span><br><span style="color:#5792F1;  font-size: 24px">$8.2 million</span>'
      }]
    };

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: 300,
      width: 300,
      output: 'canvas',
      events: {
        complete: function(o) {
          var img = zingchart.exec(o.id, 'getimagedata', {
            filetype: 'png'
          });
          document.getElementById('output').setAttribute('src', img);
        }
      }
    });
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
</head>

<body>
  <div id='myChart'></div>
  <img id="output" src="">
</body>

</html>

var myConfig = {
  type: "null",
  labels: [{
    x: 100,
    y: 100,
    height: 100,
    text: '<span style="color:#5792F1">Apple</span><br><span style="color:#5792F1; font-size: 24px">19.85%</span><br><span style="color:#5792F1;  font-size: 24px">$8.2 million</span>'
  }]
};

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: 300,
  width: 300,
  output: 'canvas',
  events: {
    complete: function(o) {
      var img = zingchart.exec(o.id, 'getimagedata', {
        filetype: 'png'
      });
      document.getElementById('output').setAttribute('src', img);
    }
  }
});