They said its intentional. In the other forum post [Bug] Cataclysm Classic - LFG Tool not crossrealm anymore - #9 by Tyrskorn If you don’t know people you aren’t playing much if it all. Even on servers like firemaw.
Also there’s nothing saving this go do something else with your time. Mop is so much harder to script sort out and has a lot less information then cata does so if we cant fix the bugs attention dev team size for cata we aren’t getting a good mop.
If your a streamer please go play a different game and boycott this company if you aren’t and wana do pvp go play pr servers no pr servers for cata but it is what it is.