title: WKWebView shows a blank screen on OSX with no output
body: <p>For some reason, the WKWebView just shows a blank screen with <strong>no errors</strong></p>
  
  <pre><code>import Cocoa
  import WebKit
  
  class ViewController: NSViewController, WKNavigationDelegate {
  
  @IBOutlet weak var webView: WKWebView?
  
  
  
  override func viewDidLoad() {
  
      super.viewDidLoad()
      webView?.navigationDelegate = self
      let url=URL(string: "https://www.google.com")
      webView?.load(URLRequest(url: url!))
  
      // Do any additional setup after loading the view.
  
  
  }
  
  override var representedObject: Any? {
      didSet {
          // Update the view, if already loaded.
      }
  }
  }
  </code></pre>
  
  <p>Like I said, no errors, and it just shows a blank screen.
  The storyboard looks like this:</p>
  
  <p><a href="https://i.stack.imgur.com/rhWCw.png" rel="nofollow noreferrer">Main.storyboard</a></p>