title: Issue with background scrollbar showing through modal in Safari only
body: <p>I'm tracking down an issue where the scrollbar on the page is showing through the modal in Safari only. I've found no conflicts with the z-index or anything and I'm wondering if it's an issue with Safari? Have any of you come across something like this before?</p>
  <p>The modal has a position of <code>fixed</code></p>
  <p><a href="https://i.stack.imgur.com/kC85C.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kC85C.png" alt="Modal window that shows the scrollbar from the background page bleeding through" /></a></p>