In only happens on my DK, and when I am in Korthia. When I finish TW, it used to place me back into Oribus, not my original location in Korthia. Now it is disconnecting me, then placing me in Oribus when I log back in.
This is happening to myself too - Draenor EU.
Finish dungeon, and get kicked out of where I was on Korthia and put back on the teleporter in Oribos.