@Vlad will do. So far the best example of what I see as the application not doing enough vs iCloud is on iOS/iPadOS. My bookmarks or windows from other devices will be out of date. Force quitting the iOS app and re-loading it will result in everything being back up to date.
My best guess is this shows that the data is there on device via iCloud, but the app hasn't refreshed it, forcing a cold start causes Orion to fetch the latest data from iCloud which gets everything back in sync.
Still trying to make a reproducible workflow for macOS.