Today, I was able to get into an area of Ascalon City Ruins behind the Foefire's Heart POI.
To get there, you climb the fence around the pit near the L80 Raven then jump in and glide down.
I'm not sure if this is an exploit or an unintended new explorable area as a result of the glider or what.
Does anyone else know anything about this? Has anyone found a chest or a JP or something?