Alanthinker Xiang

And after restored layout, set title not work too. ``` private void miSetTitle_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e) { Document1.Title = DateTime.Now.ToString(); } ```

Fixed it by use my own _dockState; ``` private void miAdd_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e) { var dock = this.FindControl("Dock"); dock.Layout.Factory.InsertDockable((_dockState.Tools[ErrorList.Id]).Owner as IDock, Output, 0); } private void miRemove_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs...