title: Window.open() is not working in WKWebView
body: <p>I am trying to open a URL in safari browser while clicking it from app's iOS WKWebView, but when I call window.open() from javascript which has no effects.</p>
  
  <p>It's not hitting the decide policy in WKWebView,</p>
  
  <pre><code>[Foundation.Export("webViewecidePolicyForNavigationActionecisionHandler:")]
  public void DecidePolicy(WKWebView webView, WKNavigationAction navigationAction, Action&lt;WKNavigationActionPolicy&gt; decisionHandler)
  </code></pre>
  
  <p>I have tried to override WKUIDelegate method, but it's not working. :(</p>
  
  <p>Could anyone help me out?</p>