滑动操作时UINavigationController崩溃UI(黑屏,视频里面)

Question

我有一个UIViewController推出navigationController 它使用自定义左/后退按钮与interactivePopGestureRecognizer,但是,当我从tableview单击一行我的应用程序有时卡住,按下主页按钮后,然后重新打开应用程序,它继续但导航控制器的滑动操作变得怪异.这是我所说的视频;

https://streamable.com/xvl38

//This is the function that I use to open chat from tableview on didSelectRowAt

func openChat(with nick: String, isFromConversationList: Bool) {
        guard let chatVC = UIStoryboard(name: "Main", bundle: .main).instantiateViewController(withIdentifier: "ChatViewController") as? ChatViewController,
            let rootNC = UIApplication.shared.keyWindow?.rootViewController as? UINavigationController else {
                return
        }
        rootNC.pushViewController(chatVC, animated: true)
}

override func viewDidLoad() {
    super.viewDidLoad()
    navigationController?.interactivePopGestureRecognizer?.delegate = nil
}
override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)   
    self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true
}
override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)
    self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false

}

可能是什么原因？