Save RenderTargetBitmap to MemoryStream

[Switch0621]

Describe the bug

Hi all!
I trying to save RenderTargetBitmap to MemoryStream and after that create Bitmap from the stream, but have exception. (Win10 x64 22H2)
What i did wrong?
P.S. RenderTargetBitmap.CreateScaledBitmap has exception too

To Reproduce

private MemoryStream _stream = new MemoryStream();
private RenderTargetBitmap _renderTargetBitmap;
private void Button_OnClick(object? sender, RoutedEventArgs e)
{
        var pixelSize = new PixelSize((int) Width, (int) Height);
        var size = new Size(Width, Height);
        _renderTargetBitmap = new RenderTargetBitmap(pixelSize, new Vector(96, 96));
        Measure(size);
        Arrange(new Rect(size));
        _renderTargetBitmap.Render(this); // this - is my window
        // load to stream
        _renderTargetBitmap.Save(_stream);   
        // new bitmap from stream
        var bmp = new Bitmap(_stream);      
}

Expected behavior

No response

Avalonia version

11.2.3

OS

No response

Additional context

[stevemonaco]

Try seeking the stream back to 0 before passing it into the Bitmap ctor.

[maxkatz6]

Yes. You need to seek stream to beginning before using it.
Save doesn't do it, just like other Stream APIs.