I find this is annoying in Yanxia.

For some weird reason, they refuse to let you fly from Namai to Doma, even though the shield generator was long since destroyed, and you can't get the ability to fly before the shield generator is destroyed.

It's really annoying to have to fly aaaaaaaaaaall the way around and up the river to get to the other side, OR worse, dive into the water to get to the House of the Fierce before you can access the western end of the zone. That stupid "Mount Cannot Fly Any Higher" message is very annoying there.