How to implement OAuth (authorization code flow) for mobile-apps using deep-links as redirection URL

Hello,

does anyone know why it is currently not possible to configure an OAuth-Client config with Grant-Type 'Authorization Code Flow' and a 'custom-scheme'-redirect URI (mobile app deep-link)?

For example I want to create a "Oauth Authorization Server - Client Application" with Grant-Type 'Authorization Code Flow' and as redirect URI i want to configure "com.mydomain.app://oauth/callback"

Can someone explain why this is not working?

Cheers