title: React scrollTop not working
body: <p>I have a react component with a scrollable div I'm trying to get the div to scroll to the bottom after it mounts:</p>
  
  <pre><code>componentDidUpdate() {
      var scrollNode = ReactDOM.findDOMNode(this.scrollElement);
      scrollNode.scrollTop = scrollNode.scrollHeight;
  }
  </code></pre>
  
  <p>the scrollNode exists and reflects the correct div however, the value of scrollTop is never changed (it remains 0 even if i set it to some arbitrary number) and the scroll doesn't occur. </p>
  
  <p>UPDATE:
  Here's an example:
  <a href="https://codepen.io/johnryan1/pen/BWoeKQ" rel="nofollow noreferrer">https://codepen.io/johnryan1/pen/BWoeKQ</a></p>