This happens only in iOS 26.2 prior versions working fine . I’m listening for updates from sampleHandler triggered from web view. The object reference is released when the didReceive message is triggered self.webkit.configuration.userContentController.add(self, name: "sampleHandler") self.webkit.load(request) func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { print(message.name) // works print(message.body) // crashes }

Same piece of code works in iOS 26.1 and earlier even a simple print crashes due to object no longer being available