title: continueUserActivity not called
body: <p>I have an app that supports Universal Links. Everything looks properly set up. I have an <code>apple-app-site-association</code> file on the server, appropriate link added to Associated Domains and also I added <code>application:continueUserActivity:restorationHandler</code> to the AppDelegate.
  Finally, I added a link to my Notes app and when I click the link and hold it I'm able to see button Open in "MyApp". When I tap the button iOS opens the app but <code>application:continueUserActivity:restorationHandler</code> is never called. What makes this even more mysterious is that <code>application:willContinueUserActivityWithType:</code> gets called (of course I return YES here)</p>
  
  <p>UPDATE: If my app is not running in the background mode and I click the link I get my app opened and I get <code>NSUserActivity</code> object in <code>launchOptions</code> parameter of the <code>application:didFinishLaunchingWithOptions:</code>. But still <code>application:willContinueUserActivityWithType:</code> isn't called.</p>