Invisible bosses.

3rd time this has happened.
2nd on a citadel boss. My character wouldn't load, the boss wouldn't load.

Either stop advertising this as if it were a finished game or put it back in closed beta.

"Whoopsie-poopsie. There goes your citadel and your xp. Better go find a new one".
There is way, way, WAY too much jank in this and it's not as if this is a new issue.

LOL. I had this happen to me twice on 2 different citadels. Hahahaha. Oh well.