title: Can ARKit display WKWebview?
body: <p>Tried ARKit to show WKWebView and all I got is a page that shows background but no foreground. The page can be scrolled though. I attached Apple web page as screenshot.</p>
  
  <p>Here's the code:</p>
  
  <pre><code>DispatchQueue.main.async {
    let webView = WKWebView(frame: CGRect(x: 0, y: 0, width: 640, height: 480))
    let request = URLRequest(url: URL(string: "https://www.apple.com")!)
  
    webView.load(request)
    plane.firstMaterial?.diffuse.contents = webView
  }
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/Tr1lq.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/Tr1lq.jpg" alt="Apple web page in ARKit"></a></p>
  
  <p>Does that mean ARKit cannot display web page? I am using iOS 12 beta 2 running ARKit 2. I have also switch off App Transport Security Settings and allow arbitrary load.</p>
  
  <p>I also look through this site and found someone with the same issue but no solution: <a href="https://stackoverflow.com/questions/47319642/wkwebview-is-showing-only-background">WKWebView is showing only background</a></p>
  
  <p>Update: It works for UIWebView.</p>