Hi, I just ran into the same issue. However our app still crashed when the delegate method was empty and the user tapped on the notification on the Lock Screen while the app was in the foreground. For us switching back to the old completion based delegate method solved the issue.

After a little bit of digging we found a proper solution for the problem. You need to mark the delegate method with @MainActor like: @MainActor func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse) async { // Do your stuff }