Lukas KubanekLooks like Apple broke #CloudKit sync in OS 26.4. Remote notifications don’t seem to arrive, so no updates unless the app is relaunched. https://developer.apple.com/forums/thread/820550
Ben Haylock 
@lukaskubanek Send up the bat signal for @justkwin ! 🤣
Quinn “The Eskimo!”@zbender @lukaskubanek Yeah, I’m willing to go out on a limb here and say that this is Not Good™.
Fortunately, there’s a couple of top notch DTSers on the case. If you haven’t already done so, please follow Ziqiao’s advice in this post:
https://developer.apple.com/forums/thread/820550?answerId=881814022#881814022
Brendan@TapForms 🇨🇦@justkwin @zbender @lukaskubanek weird. I wrote a new sync engine using CKSyncEngine and it seemed to work sometimes. I was testing last night by making a change on an old Sonoma MBP and I watched my 26.4 Tahoe Mac update. It took about a minute to update though but it did without my intervention. But I have noticed the notifications don't always arrive so I have to manually sync frequently. Maybe it's only an iOS 26.4 issue. I'll do more testing and file feedback.