title: How to handle an UIScrollView in an UIScrollView
body: <p>I want to use an <code>UIScrollView</code> in an <code>UIScrollView</code>. I think it would be clearer with a
  <a href="https://i.stack.imgur.com/D5B6k.jpg" rel="nofollow noreferrer">picture</a></p>
  
  <p>The black border is the border of the screen, the purple is the first <code>UIScrollView</code> and the blue is the second <code>UIScrollView</code>. The arrows show the direction of the scroll.</p>
  
  <p>When I try to put the second <code>UIScrollView</code> in the first with a different scrolling direction, the second show the content twice... I made a <a href="https://vimeo.com/user87689481/review/282483295/f3cc4d05e8" rel="nofollow noreferrer">video</a></p>