title: Why is SFSafariWebViewController not sharing cookies with Safari properly?
body: <p>I created an incredibly basic app which includes a <code>SFSafariViewController</code> pointing at the URL <a href="http://www.w3schools.com/js/js_cookies.asp" rel="noreferrer">http://www.w3schools.com/js/js_cookies.asp</a> . This is a test website for reading and writing cookies.</p>
  
  <p>I then loaded the same website into Mobile Safari, and added one cookie. I switched to my app, read the cookie, it's there. I go back to Safari, add another cookie, go back to my app, but the second cookie hasn't appeared. I refresh the pages, no difference. Go back to Safari and read the cookies, they are both read successfully.</p>
  
  <p>Is there anything I need to do between apps in order for the cookies to be written and read properly?</p>