Boss Encounter Bug

Here lately, in almost every dungeon I play, when people teleport out of the dungeon, they are unable to re-enter into the dungeon. I don't know if anyone else is having this issue, but it has been consistent for anyone who has been in any dungeon with me. Is this currently being looked at and if so, can we have a clue as to why this is occuring?

Any error message?

There are not error messages other than saying "An encounter is in progress". The problem is, it will do this even when absolutely NO encounters are happening, boss, trash, RP, or otherwise. Many people have gotten this including myself and it is an issue that does make Dungeoneering a burden.