yesterday (two times) and today (one time) it happend, that during the meta-event-chain "Storms of Winter", during the "Defend Raven shrines" event, I got a disconnect.
I could login directly again, but was then in another map (no active meta in that map). And from the messages from other players in the map chat, it was clear, that I was not the only one with a disconnect, it happend to a lot of other players at the same time.
Because the disconnect happened three times and it hapened always at the same event and it happend to several players, it looks like a bug.
Please take a look into this.
https://www.gw2gh.com/ - A GW2-Guild-Hall.
Register and check your guild leaderboard to see who is the best in your guild and who finished achievements first.