SwiftUI & Observation memory leaks

SwiftUIObservationLeaks.swift

import SwiftUI
import Observation

// Leaks Malloc 48 Bytes block, 144 Bytes block, 128 Bytes block on macOS 15.3 (24D60), Xcode 16.2 (16C5032a)
// leaks speed is ~ +10MB / 5 mins, with Instruments

@main
struct SwiftUIObservationLeaksApp: App {
    @State private var model: Model = .init()
    @MainActor @Observable final class Model {
        var items: [Item] = [.init(), .init(), .init()]
        struct Item: Hashable, Identifiable {
            var id = UUID()
        }
    }

    @State private var count: Int = 0
    struct V: View {
        var count: Int
        var body: some View {
            EmptyView()
        }
    }

    var body: some Scene {
        WindowGroup {
            V(count: count) // dummy view, that does not use the arg value in its body
            ForEach(model.items) { item in
                Text("\(String(describing: model.items))") // access ObservationTracking in ForEach
            }
            .task {
                while true {
                    try! await Task.sleep(for: .milliseconds(10))
                    count += 1
                }
            }
        }
    }
}

FB16444878