@Ignasis - I assume you (your developers) are already aware of this:
It is still possible to create favorites in the ConEx internal server browser but for some reason those entries seem to be added with random ports[1] as shown in the Steam out-game server browser.
But even the normal entry with port 27015 I added before the update is shown as offline despite the server running and working.
In regards to ??? instead of ping -> My server sometimes(?) appears a second time in the server browser.
[1] maybe the used outgoing port to query the server is used instead of the server’s one?