UPDATE, 1:21 PM PST: Dev has identified the cause of the teleportation issue. It is not a quick fix, so they are looking to schedule it for next week.
MOTD is up in game:
Hello all! If you exit an instance/dimension and find yourself in an unexpected location, this is a known bug, but is NOT a rollback. We're working on it!
I don't have more detail than that right now, but we are aware of people who exit instances (Tok's, dimensions, chronicles, warfronts or dungeons) and find themselves in an unexpected destination zone. we wanted to reassure players that this is NOT a rollback and there is no danger of losing items, exp or coin. It is a teleportation bug.
Dev is tracking the issue as quickly as possible, and we apologize for the inconvenience.
I will update this thread with any new information or ETA on a fix.