Dock guides not appearing when hosting WPF content in Win32

Hi,

We have WPF content that can be hosted inside a Win32 window by using the following technique:

https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/walkthrough-hosting-wpf-content-in-win32

Our WPF content has a DockSite and when using this content from a WPF window (our tool has a standalone WPF version, but can be embedded in other Win32 applications as a plugin), everything is fine and tool windows defined in the content can be put in floating mode and dock guides appear correctly to dock them. However, when hosted inside a Win32, we can make tool windows in floating mode, but then, dock guides don't appear and the only option we have is to right-click on the title bar and select "Dock" to put back the tool window where it was before. I already took a look at the "Interop Compatibility" documentation section but it doesn't work and it seems to be for when hosting Win32 content in WPF instead.

Is there any solution to make it work properly?

Thank you!