iOS 26 stops receiving push notifications

I a using the current RC version of iOS on both my iPhone and iPad. I and developing an iCloud based app and it works correctly on iOS 18. When I upgraded to iOS 26 the iCloud functions work correctly but the push notifications do not work.

The issue appears to be creating subscriptions. The following code should create a subscription and does not get an error, but it did to create a subscription under iOS 26.

func subscribeToNotifications(recordType: String,
                              subscriptionID: String, notification: CKSubscription.NotificationInfo) {
    let subscriptionIDForType = "\(subscriptionID)-\(recordType)"
    let predicate = NSPredicate(value: true)
    let subscription = CKQuerySubscription(recordType: recordType, predicate: predicate, subscriptionID: subscriptionIDForType, options: [.firesOnRecordCreation, .firesOnRecordUpdate, .firesOnRecordDeletion])
    let notification = CKSubscription.NotificationInfo()
    subscription.notificationInfo = notification
     CKContainer.default().publicCloudDatabase.save(subscription) { (returnedSubscription, error) in
        if let error = error {
            print("Error saving subscription: \(error)")
        } else {
            print("Successfully saved subscription: recordType: " + recordType + " subscriptionID: " + subscriptionIDForType)
        }
    }       
}

Print results: Successfully saved subscription: recordType: folder subscriptionID: folderName-folder