title: Xcode 9 : Navigation item title of UIWebView is loaded after WebView is loaded
body: <p>I’m loading a some URL content in WebView. The <strong>title of navigation item is set to web view title</strong> (refer below code) :</p>
  
  <pre><code>extension WebPageView: WKNavigationDelegate {
  
      func webView(_: WKWebView, didFinish _: WKNavigation!) {
          loader?.hide()
          navigationItem.title = webView?.title
      }
  
      . . .
  }
  </code></pre>
  
  <p>However, the issue with this is that <strong>content of web view is loaded thereafter title of navigation item is set (reported as bug).</strong></p>
  
  <p>Is there any way that <em>title of navigation item is set and then web view content should be loaded?</em></p>