SwiftData crash when switching between Window and ImmersiveSpace in visionOS

Environment

visionOS 26

Xcode 26

Issue

I am experiencing crash when trying to access a [String] from a @Model data, after dismissing an immersiveSpace and opening a WindowGroup.

This crash only occurs when trying to access the [String] property of my Model. It works fine with other properties.

Thread 1: Fatal error: This backing data was detached from a context without resolving attribute faults: PersistentIdentifier(...)

Steps to Reproduce

• Open WindowGroup
• Dismiss window, open ImmersiveSpace
• Dismiss ImmersiveSpace, reopen WindowGroup

Any guidance would be appreciated!

@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup(id: "main") {
            ContentView()
        }
        .modelContainer(for: [Item.self])
        
        ImmersiveSpace(id: "immersive") {
            ImmersiveView()
        }
    }
}

// In SwiftData model
@Model
class Item {
    var title: String = "" // Accessing this property works fine
    var tags: [String] = []

    @storageRestrictions(accesses: _$backingData, initializes: _tags)

    init(initialValue) {
        _$backingData.setValue(forKey: \. tags, to: initialValue)
        _tags =_ SwiftDataNoType()
    }

    get {
        _$observationRegistrar.access(self, keyPath: \.tags)
        **return self getValue(forkey: \.tags)** // Crashes here
    }