In the TargetFramework .net9-macos, there is an error when using Avalonia.

[Linlccc]

Entry function

[STAThread]
    public static void Main(string[] args)  {
        
        BuildAvaloniaApp()
            .StartWithClassicDesktopLifetime(args);
    }

Click button action

private void Button_OnClick(object? sender, RoutedEventArgs e)
    {
        Console.WriteLine(NSThread.IsMain);// true
        NSApplication.SharedApplication.InvokeOnMainThread(() =>
        {
            NSPasteboard generalPasteboard1 = NSPasteboard.GeneralPasteboard;
        });
        
        NSPasteboard generalPasteboard = NSPasteboard.GeneralPasteboard;
        List<string> texts = [];
        
        foreach (string type in generalPasteboard.Types)
        {
            texts.Add(generalPasteboard.GetStringForType(type));
        }
        
        TbCount.Text = generalPasteboard.ChangeCount.ToString();
        LbContent.ItemsSource = texts;
    }

Exception information

    AppKit.AppKitThreadAccessException: AppKit Consistency error: you are calling a method that can only be invoked from the UI thread.
   at AppKit.NSApplication.EnsureUIThread()
   at AppKit.NSPasteboard.get_GeneralPasteboard()
   at MacAvaloniaApplication.MainWindow.<>c.<Button_OnClick>b__1_0()
   at Foundation.NSActionDispatcher.Apply()
   at Foundation.NSActionDispatcher.__Registrar_Callbacks__.callback_352_Foundation_NSActionDispatcher_Apply(IntPtr pobj, IntPtr sel, IntPtr* exception_gchandle)

[maxkatz6]

You likely need NSApplication.Init() in the beginning of Program.cs

[maxkatz6]

Or run it lazily before accessing macOS APIs, but only once.

[Linlccc]

Thank you