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I have been using NSPersistentCloudKitContainer in my app for a while now. My main issue at the moment is that even though I have followed all of the documented steps for setting up background silent notifications, they don't seem to be working. (I query for the Core Data state from a Shortcut/Intent and can verify that the Core Data store hasn't been updated.) This hasn't been too much of an issue, but with new system features like widgets (WidgetKit), this is an issue I can no longer ignore. I'm not sure if it's completely out of my control (e.g. the OS just has decided not to deliver the notifications in the background) or if there's some undocumented step I need to take to ensure it is set up correctly. Has anyone gotten background syncing to work properly with NSPersistentCloudKitContainer? Did you have to do anything special to get it to work? Any tips for debugging what might be going wrong?

What's the best way to handle errors that occur with CoreData-CloudKit mirroring? I'm specifically concerned about the quotaExceeded error, if the user has run out of free space. Don't see anything in the documentation or example project.