Hi, the swipe left to go back is not working in the simulator app. my code is exactly the same as in the tutorial.

import UIKit
import WebKit

class ViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!

    override func loadView() {
        webView = WKWebView() //create instance of WKWebView class
        webView.navigationDelegate = self
        view = webView //make webView the view of our view controller
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        let url = URL(string: "https://www.hackingwithswift.com")!
        webView.load(URLRequest(url: url))
        webView.allowsBackForwardNavigationGestures = true
    }
}

Make sure you are swiping from the right spot. You have to start just off the screen.

when i try swiping just off the screen, the screen resizes. attached screenshot.

https://drive.google.com/file/d/17Hs5lLB4Imp24HVudaQRNkQcMfbhrb5f/view?usp=sharing

Make sure you have Show Device Bezels turned on in the simulator:

the "show device bezels" is already enabled under editor -> canvas. after running the simulator, the device bezel is still not visible.

https://drive.google.com/file/d/1GlnwsgQ3mWRrCzcvJ0zZAut4YwIeguOJ/view?usp=sharing

wow thanks! it worked!