macOS: Impossible to set focus on a textfield embedded in an alert

As of now, it seems impossible to set focus on a text field that is embedded in an alert on macOS.

struct ContentView: View {
    @FocusState private var focusedField: FocusField?
    
    @State private var showingAlert = false
    @State private var name = ""
    
    enum FocusField {
        case folderName
    }
    
    var body: some View {
        VStack {
            Button {
                // focusedField = .folderName // Not working either
                showingAlert.toggle()
            } label: {
                Text("Show alert")
            }
            .alert("Alert", isPresented: $showingAlert, actions: {
                TextField("Name", text: $name)
                    .font(.body)
                    .autocorrectionDisabled()
                    .focused($focusedField, equals: .folderName)
                
                Button("Cancel", role: .cancel, action: {})
            })
#if os(macOS)
            .defaultFocus($focusedField, .folderName)
#endif
        }
        .padding()
    }
}

When running this code on iOS, the text field does get focus automatically. Is it me that is doing something wrong or it's just a SwiftUI shortcoming on macOS?