DialogHost and XAML Binding Error

[Frillaut]

Hi!
This simple thing leads to an error in the XAML binding... Can't DialogHost be inserted into the root Window element?

<Window ...>
    <materialDesign:DialogHost/>
</Window>

XAML Binding Error
Data context: null
Target: VisualBrush.Visual
Target Type: Visual
Description: The control FrameworkElement or FrameworkContentElement for the target element cannot be found.

[Keboo]

I believe this is a duplicate of #3228