About 1m before the defense of Tarir event was set to start (i.e. with about 1m left in challenges), on a full Auric Basin map, we received a bogus “map closing” prompt.
99% of the people on the map being mindless lemmings, generically incapable of critical thought, they left (no-one had the thought: “hey, wait, the map is full, a meta-event is about to start, why is it closing?”). Whole quadrants were unmanned for the event. We tried to taxi in replacements, without success (my guess is that virtually everyone interested in Tarir was already on a functional map, so why would they want to leave?).
Doomed the event before it started, and wasted the time of everyone who stayed.
EXTREMELY FRUSTRATING, to say the least.