ExpressionAnimation not work for ReferenceParameter.Offset

[Meloman19]

Describe the bug
Simple ExpressionAnimation that copies the Offset from one object to another does not work.

To Reproduce
Create two CompositionVisual and link their Offset properties with Expression.

1. View:

<Grid ColumnDefinitions="*, *">
   <Panel x:Name="Root1" Background="Transparent" />
   <Panel x:Name="Root2" Grid.Column="1" />
</Grid>

2. CodeBehind:

CompositionVisual rect1;
CompositionVisual rect2;

protected override void OnLoaded(RoutedEventArgs e)
{
    base.OnLoaded(e);

    rect1 = CreateSolidColorVisual(Root1);
    rect2 = CreateSolidColorVisual(Root2);

    var anim = ElementComposition.GetElementVisual(this).Compositor.CreateExpressionAnimation();
    anim.Target = "Offset";
    anim.Expression = "Source.Offset";
    anim.SetReferenceParameter("Source", rect1);

    rect2.StartAnimation("Offset", anim);

    Root1.PointerMoved += Root1_PointerMoved;
}

private CompositionVisual CreateSolidColorVisual(Visual visual)
{
    var composition = ElementComposition.GetElementVisual(visual);

    var rectangle = composition.Compositor.CreateSolidColorVisual();
    rectangle.Size = new Vector(100, 100);
    rectangle.Color = Colors.Red;

    ElementComposition.SetElementChildVisual(visual, rectangle);

    return rectangle;
}

private void Root1_PointerMoved(object? sender, Avalonia.Input.PointerEventArgs e)
{
    var pos = e.GetPosition(Root1);
    rect1.Offset = new Vector3D(pos.X, pos.Y, 0);
}

AvaloniaBehavior.mp4

Expected behavior
Both rectangles move synchronously.

For example:

WinUIBehavior.mp4

Desktop:

• OS: Windows
• Version 11.0.4