New window opened when using VideoView

On some machines playing a video (or even setting source to a .jpg) using VideoView I get a new window labeled "VLC (Direct3D11 output)", even though the control is embedded in a Grid or a DockPanel. I cannot say why this happens or in which scenarios, but I get it almost every time on my development machine. A way to prevent this might be to switch the renderer, but I have no clue where to change it for a VideoView?!

Example code:

    <Grid DockPanel.Dock="Top" Margin="10" Background="Black">
        <vlcwpf:VideoView x:Name="VlcPlayer" Grid.Row="0" Grid.Column="0" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" ></vlcwpf:VideoView>
    </Grid>

Used packages:

Edited Aug 29, 2018 by Chris Loose

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