title: simple list in react beautiful dnd not working
body: <p>I've been following the official course on egghead (<a href="https://egghead.io/lessons/react-reorder-a-list-with-react-beautiful-dnd" rel="nofollow noreferrer">https://egghead.io/lessons/react-reorder-a-list-with-react-beautiful-dnd</a> and sample working code: <a href="https://codesandbox.io/s/52p60qqlpp" rel="nofollow noreferrer">https://codesandbox.io/s/52p60qqlpp</a>) and wrote this:</p>
  
  <p><a href="https://codesandbox.io/s/00k3rwq3qn" rel="nofollow noreferrer">https://codesandbox.io/s/00k3rwq3qn</a></p>
  
  <p>However, it doesn't actually drag and drop. I've looked through several examples, and I can't spot the issue in my code. I would really appreciate someone feedback on what my mistake is.</p>
  
  <p>Thanks</p>