VideoView Background is very unstable from LibVLCSharp.WPF

You can see this video, The VideoView control's background is unstable. When I click the button more than 20 times to open the VLC control, the background of the control sometimes doesn't render black, but some other color.

I just opened the VLC control and I didn't play any video. So the problem is not due to playing the video.

I didn't set any background color for the VLC control, so its background color should always be black by default.

001

Full Test C# code .NET 6.0 With Visual studio 2022 (With LibVLCSharp.WPF 3.6.6)

MainWindow.xaml

<Window x:Class="VLCTransparentWindowTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        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:local="clr-namespace:VLCTransparentWindowTest"
        mc:Ignorable="d" WindowStartupLocation="CenterScreen"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Button Content="Button" Margin="318,166,350,206" Click="Button_Click"/>
    </Grid>
</Window>

MainWindow.xaml.cs

using System.Windows;

namespace VLCTransparentWindowTest
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var window = new TestWindow();
            window.ShowDialog();
        }
    }
}

TestWindow.xaml

<Window x:Class="VLCTransparentWindowTest.TestWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:VLC="clr-namespace:LibVLCSharp.WPF;assembly=LibVLCSharp.WPF"
        mc:Ignorable="d" WindowStartupLocation="CenterScreen"
        Title="TestWindow" Height="400" Width="600" Background="Black">
    <Grid>
        <VLC:VideoView x:Name="player" x:FieldModifier="private">
        </VLC:VideoView>
    </Grid>
</Window>

TestWindow.xaml.cs

using System.Windows;

namespace VLCTransparentWindowTest
{
    public partial class TestWindow : Window
    {
        public TestWindow()
        {
            InitializeComponent();
        }
    }
}