WPF ComboBox не обновляет Text когда IsEditable

Есть ComboBox, проблем в том что когда он IsEditable="True" не работает обновление текста при изменении его в записи, если убрать то все работает. Почему?

<StackPanel>
    <DockPanel>
        <Button DockPanel.Dock="Right" Width="35" Height="35" Content="Click" Click="Button_Click"/>
        <ComboBox DisplayMemberPath="Name" SelectedIndex="0" IsEditable="True" ItemsSource="{Binding Records}"/>
    </DockPanel> 
</StackPanel>

public class MainViewModel : NotifyPropertyChanged {
private ObservableCollection<Record> _records;
public ObservableCollection<Record> Records {
  get => this._records;
  set {
    this._records = value;
    OnPropertyChanged(nameof(this.Records));
  }
}

public MainViewModel() {
  this.Records = new ObservableCollection<Record>();
  this.Records.Add(new Record() {
    Name = "Test"
  });
  this.Records.Add(new Record() {
    Name = "12345"
  });
  this.Records.Add(new Record() {
    Name = "54321"
  });
  }
}

public class Record : NotifyPropertyChanged {

private string _name;
public string Name {
    get => this._name;
    set {
      this._name = value;
      OnPropertyChanged(nameof(this.Name));
    }
  }
}

public abstract class NotifyPropertyChanged : INotifyPropertyChanged {
  public event PropertyChangedEventHandler PropertyChanged;
  public void OnPropertyChanged(string property) {
    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
  }
}


private void Button_Click(object sender, RoutedEventArgs e) {
  ((MainViewModel)this.DataContext).Records[0].Name = "AAAAA";
}