Is anybody able to auth with WebAuthenticationBroker in a uwp app

[LaBencha]

Empty "connecting to a service Window"
the same "start uri" works on a regular browser

[LaBencha]

Follow up
I couldn't find any app that use the official Microsoft WebAuthenticationBroker. They show examples using

• Facebook [C++, C#]
• Twitter [C#]
• Flickr [C#]
• Google [C++, C#]

Even the Official Spotify app don't use it:

This is how look on the UWP app instead:

I can't really find any discussion about how people auth their project.
( I actually have problem finding apps  at all...)
Maybe nobody have any problem and I'm just not very good at implementing something super easy?
I'm on discord if anybody need me...