iCloud Sync does work on iPhone & Mac but not on iPad

I have found a strange problem with iCloud Sync.

Situation: I have developed an iOS, iPadOS & macOS App using SwiftUI. All three Versions share the same Codebase *(macOS Version is a Catalyst iPad Version)*. The Project does support iCloud Sync via the NSPersistenceCloudKitContainer to sync data between all 3 devices.

Problem: iCloud Sync works perfectly between my iPhone and my Mac, but when using it with my iPad, I face a really strange problem. When creating a new CoreData Object on my iPad, it will appear on my other devices after a few Seconds, which is totally fine. However, when creating the CoreData Object on my iPhone or Mac, it will not appear on the iPad *(I waited 10min)*. Only when closing and reopening the App, the Object will appear.

Details: I not even have to fully exit the App. It is enough to just swipe up to Application Picker and select the App again.

Question: Does anyone has an idea or something what could cause this strange error? And remember: All three devices are using the same codebase.

Thanks a lot for your help!
iCloud Sync does work on iPhone & Mac but not on iPad
 
 
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