The final quest in the "Looking for the Korean Folk Town" quest chain given by Camila at level 35 is not completable.
I accepted the quest and got Camila's letter for Kong Ji, then selected "Korean Folk Town: Through the Sky", which makes me go to Ellinia to Orbis, then to Ludibrium, then down Helios Tower to the Korean Folk Town. After I arrive at KFT, I'm supposed to give the letter to Kong Ji.
However, after I accepted the "Korean Folk Town: Through the Sky", it immediately went into my completed tab in my quests and there was no longer a quest in progress or a completable quest. As a result, I have Camila's letter for Kong Ji, but cannot give it to her as there is no quest.
This is a big deal to me since I am trying to complete every quest, and being unable to clear a quest because of seemingly what is a bug would be greatly unfortunate. Fixing this problem would also be beneficial to anyone else who wants to clear quests in the future.