Hack around WKWebView's white flashing that it does while loading content

iOS/Detail/DetailViewController.swift

@@ -28,6 +28,7 @@ class DetailViewController: UIViewController {
 	override func viewDidLoad() {
 		
 		super.viewDidLoad()
+		webView.isHidden = true
 		webView.navigationDelegate = self
 		
 		markAsRead()
@@ -211,6 +212,15 @@ extension DetailViewController: WKNavigationDelegate {
 		
 	}
 	
+	func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
+		// We initially hide the webview and only show it after it has loaded to avoid the
+		// white flashing that WKWebView does when it loads.  This is especially noticable
+		// in dark mode.
+		DispatchQueue.main.asyncAfter(deadline: .now() + 0.05) {
+			webView.isHidden = false
+		}
+	}
+	
 }
 
 private extension DetailViewController {