CanvasVirtualControl's Size property becomes 0 after the window is maximized.

[RostislavMetroLab]

If you create a stretched grid on the whole window with CanvasVirtualControl:

    <Grid HorizontalAlignment="Stretch"
      VerticalAlignment="Stretch">
      <Grid.ColumnDefinitions>
          <ColumnDefinition Width="*" />
          <ColumnDefinition Width="Auto" />
      </Grid.ColumnDefinitions>
      <Border
          Grid.Column="1"
          HorizontalAlignment="Stretch"
          VerticalAlignment="Stretch"
          Background="GreenYellow" />
      <win2d:CanvasVirtualControl
          x:Name="_canvasVirtualControl"
          Grid.Column="1"
          Width="200" />
    </Grid>

and draw something on the RegionsInvalidated event:

foreach (var region in args.InvalidatedRegions)
{
    IRandomAccessStream random =
        await RandomAccessStreamReference.CreateFromUri(new Uri("cake.png")).OpenReadAsync();

    BitmapDecoder decoder = await BitmapDecoder.CreateAsync(random);
    PixelDataProvider pixelData = await decoder.GetPixelDataAsync();

    byte[] colorArray = pixelData.DetachPixelData();

    using (var canvasRenderTarget = new CanvasRenderTarget(sender, 200, 200, 96))
    {
        canvasRenderTarget.SetPixelBytes(colorArray);

        using (var drawingSession = sender.CreateDrawingSession(region))
        {
            drawingSession.DrawImage(canvasRenderTarget, 0, 0);
        }
    }
}

then after maximizing the window the CanvasVirtualControl.Size property becomes (0,0) and returns to the correct value after reducing the window size. UWP did not have this problem, but it appears in WinUI3. Is there any workaround?