[Update] This was fixed with the addition of Episode 4, Steam, and the in game PSO2 Friend system, though it still might not work if only adding Friends via Xbox Live, it has to be 100 friends in the PSO2 Friend List.
[Original Post] I have already sent a bug report, this is mostly just a PSA to the community.
After having the needed 100 friends in PSO2 via Xbox Live, the title for achieving that goal hasn't unlocked. You can see in the attached photos that since it's on page 3 of the friends list (each page containing 50 friends) that I have over 100 friends in game, but the next screenshot shows that it didn't unlock the title. I tried loading up the game on both PC and Xbox One, even rebooted each platform, and it still didn't unlock.
I have censored the other players' names for privacy.