Hi thanks for the reply; I think i wasn’t clear about what’s going on. I have a window with a RealityView in it. Currently that RealityView presents a Reality Composer scene. When I look at that window in the compiled app, the contents sit physically in front of the actual window, and moving them back in the scene has no effect at all. Since posting this, I have experimented with doing a findEntity in the scene and pulling out a Transform which parents a ModelEntity. Doing that allows me to manipulate the depth of the ModelEntity relative to that Transform. But it is surprising that I can’t do the same thing with the scene itself; I have to extract scene elements to adjust their depth.

Running Hello World in Xcode 15 beta 5 on a M1 Max still crashes and adding @ObervationIgnored just increases the errors. Ultimately I just refactored ViewModel to @ObservableObject and converted all instances to @ObservedObjects. It required a number of other tweaks too, but those were the primary changes.

Extending what has already been suggested, you can modify the predicate of the wrappedValue to dynamically trigger an update to a SwiftUI list. In the example below, toggling the isFiltered @State causes an update of the List and it reloads the FetchedResults with the filtered or unfiltered predicate. @FetchRequest private var items: FetchedResults<Item> @State var isFiltered = false let filteredPredicate: NSPredicate let unfilteredPredicate: NSPredicate init(element: Element) { self.element = element      filteredPredicate = NSPredicate(format: "element == %@ && score > 0.85", element) unfilteredPredicate = NSPredicate(format: "element == %@", element)      self._items = FetchRequest<Item>(entity: Item.entity(), sortDescriptors: [NSSortDescriptor(keyPath: \Item.name, ascending: true),           predicate: unfilteredPredicate,           animation: .default) } var listItems: FetchedResults<Moment> {      get {         _moments.wrappedValue.nsPredicate = isFiltered ? filteredPredicate : unfilteredPredicate           return moments      } } var body: some View {     List {        ForEach(Array(listItems.enumerated()), id: \.element) { index, item in Text(item.name) .toolbar {                ToolbarItem {                    Button {                        withAnimation {                           isFiltered.toggle()                        }                   } label: {                        Label("Filter Items", systemImage: isFiltered ? "star.circle.fill" : "star.circle")                   }                }           } } } }

For future viewers of this question, there is a more detailed description of the correlate method here: https://developer.apple.com/documentation/accelerate/vdsp/1d_correlation_and_convolution