SwiftUI TextField inside Toolbar on MacOS not trigger onChange of focusedState

struct ContentView: View {
  @State private var editTitle = "title"
  @FocusState private var isFocused: Bool
  
  var body: some View {
    NavigationSplitView {
      Text("sidebar")
    } detail: {
      Text("detail")
        .navigationTitle("")
        .toolbar {
          ToolbarItem(placement: .principal) {
            TextField("", text: $editTitle)
              .focused($isFocused)
              .onChange(of: isFocused) { oldValue, newValue in
                print("onChange")
              }
          }
        }
    }
  }
}

1. on iOS, onChange is triggerred when TextField is inside toolbar or not
2. on MacOS, onChange is not triggerred when TextField is inside toolbar, but when not in toolbar, it works fine