When I try to join one of my friend's world the message of the world being "Friend Only" pops up and it doesn't let me join even tho I have him on my friend list.
I realize this happens if my conection status is set up as Offline. Once I change it to Online it lets me join no problem and I can even change it back to Offline.
I know it's not a big issue (since I still can join) but I find it kind of annoying because sometimes I want to stay Offline to avoid be seen.
Set status as Offline.
Try to join to a server that is using a password Edit: It's the ONLY FRIENDS setting.