title: Div scrolling freezes sometimes if I use -webkit-overflow-scrolling
body: <p>if I use <code>-webkit-overflow-scrolling</code> for a scrolling div, it scrolls perfectly with native momentum. But, div itself sometimes freezes and does not respond my finger moves. After 2-3 seconds later, it becomes again scrollable. </p>
  
  <p>I don't know how I am reproducing this problem. But, as I see there are two main behavior creates this situation. </p>
  
  <p>First, If I wait for a while, for instance, 20 seconds, and touch the div, it does not respond. I wait a couple of seconds, and it becomes working again.</p>
  
  <p>Second, I touch several times quickly, and then, it becomes freezing, and again, after a couple of seconds later, it starts working again.</p>
  
  <p>How can I prevent this freezing?</p>