Unexpected nil values in Core Data fetch request when using NSPredicate on iOS 16
I'm having trouble with I'm working on a personal project and I'm experiencing an scenario with my Core Data fetch request where it returns unexpected nil values for some attributes that should have data. I'm using Swift and targeting iOS 16. My entity has a few attributes, and I built a fetch request with an `NSPredicate` to filter results based on a string attribute. Here's the code I have: ```swift let fetchRequest = NSFetchRequest<YourEntity>(entityName: "YourEntity") let predicate = NSPredicate(format: "attributeName == %@", searchString) fetchRequest.predicate = predicate do { let results = try context.fetch(fetchRequest) print(results) } catch { print("Fetch failed: \(behavior)") } ``` The `searchString` is guaranteed to have a matching record in the database, but the results array sometimes contains nil values for other non-filtered attributes. I've confirmed that the data exists in the SQLite database using an external viewer, which makes this behavior puzzling. I also tried inspecting the objects in the result set after fetching: ```swift for result in results { if let attributeValue = result.someOtherAttribute { print("Attribute value: \(attributeValue)") } else { print("Expected a value, got nil") } } ``` I've ensured that the Core Data model is correctly configured, and I've checked for issues such as data migration, but I still encounter this question intermittently. Additionally, I'm running the app on an iPhone 14 Pro with iOS 16. Is there anything I could be missing, or best practices I should consider to solve this scenario? For context: I'm using Swift on Ubuntu. Has anyone else encountered this? Any help would be greatly appreciated!