wkwebview - iOS 13.4.1 更新后 WKWebView 无法识别点击手势

Question

在 ios 更新到 13.4.1 以能够检测 WKWebView 中的点击手势后，我的代码如下：

override func viewDidLoad() {
        super.viewDidLoad()
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(viewTap) )
        tapGesture.delegate = self
        webview.addGestureRecognizer(tapGesture)
}

    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
      return true
    }

@objc func viewTap() {
    print("tap on viewTap...")
}