When I add new records they will appear in List regardless fetchLimit for @FetchRequest. How to fix it?

@FetchRequest(fetchRequest: Item.fetchRequestLimit(fetchLimit: 2))
    private var items: FetchedResults<Item>

var body: some View {
    VStack {
        Button(action: addItem) {
            Label("Add Item", systemImage: "plus")
        }

        List {
            ForEach(items) { item in
                Text("Item at \(item.timestamp!, formatter: itemFormatter)")
            }
        }
    }
}

private func addItem() {
    withAnimation {
        let newItem = Item(context: viewContext)
        newItem.timestamp = Date()

        PersistenceController.shared.save()
    }
}

extension Item {
    static func fetchRequestLimit(fetchLimit: Int) -> NSFetchRequest<Item> {
        let request: NSFetchRequest<Item> = Item.fetchRequest()

        request.fetchLimit = fetchLimit
        request.sortDescriptors = [NSSortDescriptor(keyPath: \Item.timestamp, ascending: false)]

        return request
    }
}