message: _tJsx returns a React Object, the sub fn must return a React Object
  not a string
diff: @@ -17,6 +17,7 @@ limitations under the License.
  'use strict';
  import React from 'react';
  +import ReactDOM from 'react-dom';
  import { _t, _tJsx } from '../../../languageHandler';
  var DIV_ID = 'mx_recaptcha';
  @@ -66,11 +67,10 @@ module.exports = React.createClass({
  // * jumping straight to a hosted captcha page (but we don't support that yet)
  // * embedding the captcha in an iframe (if that works)
  // * using a better captcha lib
  - warning.innerHTML = _tJsx(
  + ReactDOM.render(_tJsx(
  "Robot check is currently unavailable on desktop - please use a <a>web browser</a>",
  /<a>(.*?)<\/a>/,
  - (sub) => { return "<a href='https://riot.im/app'>{ sub }</a>"; }
  - );
  + (sub) => { return <a href='https://riot.im/app'>{ sub }</a>; }), warning);
  this.refs.recaptchaContainer.appendChild(warning);
  }
  else {
  