ListBox deselects selected item when calling Move() on bound ObservableCollection

[doobah]

Bug Description

When a ListBox.ItemSource is bound to an ObservableCollection, and an item is selected, if Move() is called on the underlying item in the collection, then the ListBox selection is cleared. This does not happen if the selected item is not the one that Move() is called on, even though its position may change.

To Reproduce

The following example contains a ListBox bound to an ObservableCollection. The button calls Move() to move the first item to the end of the list. Note that when the first item is selected and subsequently moved, it is deselected. Selecting any other item and calling Move() causes the item's position to change, but it stays selected.

XAML:

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:vm="clr-namespace:Bug.ViewModels"
             mc:Ignorable="d" d:DesignWidth="200" d:DesignHeight="450"
             Width="200" Height="450"
             x:Class="Bug.Views.MainView"
             x:DataType="vm:MainViewModel">
  <DockPanel>
    <Button Content="Move" DockPanel.Dock="Right" Command="{Binding MoveCommand}"/>
    <ListBox ItemsSource="{Binding Items}">
      <ListBox.ItemTemplate>
        <DataTemplate>
          <Label Content="{Binding}" />
        </DataTemplate>
      </ListBox.ItemTemplate>
    </ListBox>
  </DockPanel>
</UserControl>

ViewModel:

public class MainViewModel : ViewModelBase
{
    public ObservableCollection<string> Items { get; set; } = new ObservableCollection<string>()
    {
        "Item 1",
        "Item 2",
        "Item 3",
        "Item 4",
        "Item 5"
    };

    public ICommand MoveCommand { get; set; }

    public MainViewModel()
    {
        MoveCommand = ReactiveCommand.Create(() =>
        {
            Items.Move(0, Items.Count - 1);
        });
    }
}

Expected Behavior

The ListBox's selected item should remain selected after calling ObservableCollection.Move() on the underlying item.

Avalonia Version

11.1.0-rc2

OS

Windows

[doobah]

This also happens with sorting via a Dynamic Data source cache.