When I'm trying to join my friends world it comes up with a screen that's says "unable to connect to world" my friend is on Xbox one and I'm on ps4, I've tried joining him, and he's tried joining me, we both got the same screen. I don't think this has anything to do with platforms because I tried joining someone else on ps4 and the same thing happened. When I used my mobile account to join my ps4 account it worked normally (keep in mind I was using the same internet on my phone and ps4) it would be great if this bug is fixed, because Minecraft is advertised as crossplay.