Eternity Ring not working in HW areas?

[Elim]

It happens when your partner is mounted and flying and you're not. It's happened to me many times. And yes, both of us have flying unlocked in every area.

Actually... I'm not 100% sure if you'll teleport to him properly if you're also mounted and flying since I haven't tested it with my partner. I assume you will though.

EDIT:

You have to have flight for that area and be on a mount to TP to your bound one.

That's incorrect. You wont even be teleported to an aetheryte if you or your partner have not unlocked flying in an area. Unless they changed it in the last hotfix.