Quote Originally Posted by Alhanelem View Post
I remember being able to use it without much issue. It *is* supposed to break on level-up (including master levels) but I've never heard of level sync breaking upon earning job points.

Any other case should likely be treated as a bug.
You may not have noticed that the Level Sync broke and continued on killing mobs because you retain your buffs when the sync is cancelled. But if you reapply the sync, you lose all your buffs. This has been true since the introduction of Master Levels.

An interesting issue might be to sync to a person who is indeed Mastered but has not unlocked Master Leveling to have a permanent M.Lvl 0 sync. . . Although, typically when the sync cannot earn Exemplar Points, nobody earns any.