Apparently this is by design now with iOS 16.4. You need to actually mark the webview as inspectable even while running in debug mode from Xcode. See blog post at https://webkit.org/blog/13936/enabling-the-inspection-of-web-content-in-apps/ If you're on Capacitor, there are more details and a temporary workaround here: https://github.com/ionic-team/capacitor/issues/6441