Same issues！

I have a similar issue. I used .tabViewStyle(.sidebarAdaptable), but in iPadOS 18, my .toolbarTitleMenu or ToolbarItem(placement: .principal) content cannot be displayed. Using NavigationSplitView in iOS 17 works fine.

I'm facing the same issue as you. When testing on iOS 18 (I don't have a lower version device) using Xcode, everything works fine. However, the app crashes when distributed through TestFlight, and strangely, the second time I try to run it, the crash is gone. The error message indicates a missing critical piece of data. In a moment of desperation, I wrote some seemingly silly code, but surprisingly, it worked, and the TestFlight crash no longer occurs. before： @MainActor class MyModelContainer { @AppStorage(StorageKeys.iCloudSync) public var iCloudSync: Bool = true static let shared = MyModelContainer() let container: ModelContainer private init() { let schema = Schema(versionedSchema: SchemaLatest.self) container = try! ModelContainer(for: schema, migrationPlan: MeMigrationPlan.self, configurations: [ModelConfiguration(isStoredInMemoryOnly: false, cloudKitDatabase: Preferences.shared.iCloudSync ? .automatic : .none)]) } } after: @MainActor class MyModelContainer { @AppStorage(StorageKeys.iCloudSync) public var iCloudSync: Bool = true static let shared = MyModelContainer() let container: ModelContainer private init() { let schema = Schema(versionedSchema: SchemaLatest.self) do { container = try ModelContainer(for: schema, migrationPlan: MeMigrationPlan.self, configurations: [ModelConfiguration(isStoredInMemoryOnly: false, cloudKitDatabase: Preferences.shared.iCloudSync ? .automatic : .none)]) } catch { container = try! ModelContainer(for: schema, migrationPlan: MeMigrationPlan.self, configurations: [ModelConfiguration(isStoredInMemoryOnly: false, cloudKitDatabase: Preferences.shared.iCloudSync ? .automatic : .none)]) } } }

@MainActor struct SomeTip: Tip { @Parameter static var haveSome: Bool = false static let eventOneHappened = Event(id: "eventOneHappened") nonisolated var title: Text { MainActor.assumeIsolated { Text("***") } } nonisolated var image: Image? { MainActor.assumeIsolated { Image(systemName: "heart") } } nonisolated var options: [TipOption] { MainActor.assumeIsolated { [Tip.MaxDisplayCount(1)] } } nonisolated var rules: [Rule] { MainActor.assumeIsolated { [ #Rule(Self.$haveSome) { $0 == true }, #Rule(Self.eventOneHappened) { $0.donations.count >= 1 } ] } } } I wrote it like this at the beginning. Although there is no warning now, it looks strange. However, my rules are pretty simple, all it takes is control through Event.