React can't render SVG under PhantomJS

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
  </head>
  <body>
    <svg id="svgRoot">
      <g id="gElement">
​
      </g>
    </svg>
    <script src="https://fb.me/react-0.14.0-rc1.js"></script>
    <script src="https://fb.me/react-dom-0.14.0-rc1.js"></script>
    <script type="text/javascript">
    var circle = React.createElement("circle", {
      r: 50,
      fill: "red",
      cx: 50,
      cy: 50,
    });
    ReactDOM.render(circle, document.getElementById("gElement"));
    </script>
  </body>
</html>
​
    

https://fb.me/react-0.14.0-rc1.js

https://fb.me/react-dom-0.14.0-rc1.js