In Mac app, when the Settings view that uses `@Environment(\.dismiss)` it causes the subview's models to be created multiple times.

Problem

• For a mac app, when the Settings view that uses @Environment(\.dismiss) it causes the subview's models to be created multiple times.

Environment

• macOS: 26.2 (25C56)

Feedback

• FB21424864

Code

App

@main
struct DismissBugApp: App {

    var body: some Scene {
        WindowGroup {
            ContentView()
        }

        Settings {
            SettingsView()
        }
    }
}

ContentView

struct ContentView: View {
    
    var body: some View {
        Text("Content")
    }
}

SettingsView

struct SettingsView: View {

    @Environment(\.dismiss) private var dismiss

    var body: some View {
        VStack {
            Text("Settings")
            SectionAView()
        }
    }
}

SectionAView

struct SectionAView: View {

    @State private var model = SectionAViewModel()

    var body: some View {
        Text("A")
            .padding(40)
    }
}

SectionAViewModel

@Observable
class SectionAViewModel {

    init() {
        print("SectionAViewModel - init")
    }

    deinit {
        print("SectionAViewModel - deinit")
    }
}

Steps to reproduce (refer to the attached video)

1 - Run the app on the mac

2 - Open app's Settings

3 - Notice the following logs being printed in the console:

SectionAViewModel - init
SectionAViewModel - init

4 - Tap on some other app, so that the app loses focus

5 - Notice the following logs being printed in the console:

SectionAViewModel - init
SectionAViewModel - deinit

6 - Bring the app back to focus

7 - Notice the following logs being printed in the console:

SectionAViewModel - init
SectionAViewModel - deinit

Refer to screen recording