Critical notifications crashing in… | Apple Developer Forums

Critical notifications crashing in Xcode 26 simulator

I am scheduling critical user notifications with a custom sound. This worked for years both on devices and in the simulator. Since Xcode 26 it crashes in simulator.

Example

let content = UNMutableNotificationContent()
content.title = "Critical"
content.body = "Example"
content.sound = UNNotificationSound.criticalSoundNamed(UNNotificationSoundName("notification.aiff"), withAudioVolume: 0.5)
content.interruptionLevel = .critical
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 10, repeats: false)
let request = UNNotificationRequest(identifier: "exampleCriticalNotification", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request)

It seems that simpler variants such as just content.interuptionLevel = .critical or just content.sound = UNNotificationSound.defaultCritical also crash.

I assume that critical notifications is a small niche use case but i still hope this gets fixed. This is filed as FB20272392 with a full crash log.