title: Google Chart "Unable to get property 'replaceChild' of undefined or null reference" error in Internet Explorer
body: <p>I'm trying to use Google Chart in Internet Explorer. I'm using the Timeline chart, but whenever I hover with the mouse over a line in the chart, and then move the mouse away, it results in an error:</p>
  
  <blockquote>
    <p>Unable to get property 'replaceChild' of undefined or null reference</p>
  </blockquote>
  
  <p>This is happening event when going to the official Google Charts documentation: <a href="https://developers.google.com/chart/interactive/docs/gallery/timeline" rel="nofollow">https://developers.google.com/chart/interactive/docs/gallery/timeline</a>
  which means this is not something wrong in my code.</p>
  
  <p>Anyone has an idea on how to resolve/handle this?</p>