I'm building an alarm app using the new AlarmKit introduced in iOS 26. The alarm works correctly when the device is locked, but when the screen is already on and unlocked, it only gives a single short vibration. I tested another app that also uses AlarmKit just to confirm, and it behaves the same way—only one short vibration if the display is awake, and the developer added a push notification as a workaround. The default iOS Clock app works properly in both situations (though when the screen is on, it uses the Dynamic Island interface). So I'm wondering: is this behavior a bug in AlarmKit, or is it intentional?