4.16 Steam Multiplayer can't find session and worked fine with 4.15?

When Steam is opened and we try and find a game it says no sessions found. On the host side it says session created but we are unable to find that session while steam is open. We have the steam subsystem plugin turned on and what we believe to be the right settings inside the config folder.

The game works fine if Steam isn’t open we can host and find the session. The game also used to work with Steam before we upgraded from 4.15 to 4.16. Unsure what could be wrong.