I'm using the ShellBrowser WPF Components. I'm seeing problems concerning the z-order of controls, the ShellBrowser controls always appear on top, while they should be hidden by other controls.
Not all controls in the ShellBrowser WPF Edition are native WPF controls. Some - like ExplorerBrowser - host ActiveX controls, others like currently the ShellTreeView and ShellListView are Windows Form based.
Mixing those components in a WPF app is underlying some technological restrictions that turn up as "airspace problems" (see e.g. https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/technology-regions-overview).
In case of doubt, please don't hesitate to test the controls intensively using the demo version.