title: Bootstrap modal scrolling background on mobile
body: <p>I'm having an interesting issue with bootstrap modal. On desktop it works perfectly, but the issues start when using an iPhone. When you scroll up and down, the background will move instead of the modal, but only if you initially pressed in an input. </p>
  
  <p>It might be an issue that when an input (or a select element) is focused, then the under layer scrolls instead of the modal. </p>
  
  <p>I hope that makes sense. </p>
  
  <p>Has anyone seen this behavior before?</p>