I noticed this for a while and I don't know if this is happening to some other players but I noticed when I have a pet activated if I enter a dungeon it may not be there anymore and I have to reactivate it. Same with sometimes map changes. So entering or leaving basically same things happen.
It's not happening all the time but enough where I started to realize it wasn't some random occurance one day.
oh and I think it actually happened even when I entered a building such as upon entering one in ec earlier tonight I had to reactivate it again.
Edited by Blissy, 17 February 2016 - 08:00.