Avalonia: Opacity of videoview not applied

Summary

Setting the opacity property of the videoview in an avaloniaui view has no effect. Also changing the opacity of the parent element or the window has no effect on the videoview itself. It seems that the videoview is rendered above the whole application itself.

Minimal project and steps to reproduce

Clone the project
Add Opacity to the VideoView (samples/LibVLCSharp.Avalonia.Sample/Views/MainWindow.xaml)

Relevant LibVLC logs and/or screenshots

The following screenshot demonstrates the issue. The main window that hosts the vlc videoview is transparent, but the videoview itself keeps being solid:

Environment

OS: Windows
Version 11
Device: Dell Vostro 7620
LibVLC version and architecture 3.0.21
LibVLCSharp version 3.9.2
Avalonia Desktop: 11.2.3

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information