title: Apple smart banner is showing empty bar in ios safari (id correct in metatag)
body: <p>So about a year ago I implemented the smart banner for a ios app on a mobile website.
  It worked fine until I saw earlier today that it is empty.</p>
  
  <p>I looked at the id in the meta tag. But it is correct.</p>
  
  <p>Screenshot: </p>
  
  <p><a href="https://i.stack.imgur.com/dmRHK.png" rel="nofollow"><img src="https://i.stack.imgur.com/dmRHK.png" alt="http://sup.urb.li/1huyf"></a></p>
  
  <pre><code>&lt;meta name="apple-itunes-app" content="app-id=[ID]"&gt;
  </code></pre>
  
  <p>Can't find it myself, so help would be appreciated</p>
  
  <p>iOS 9+
  iPhone 5+</p>
  
  <h2>iOS emulator on mac mini</h2>
  
  <p>all the same effect (see screenshot)</p>
  
  <p>Thanks !</p>