After completing the quests for the area, the Twilight Stormwakers remain in the completed phase. This makes farming for herbs or ore difficult.
Twilight Stormwakers are extremely fast and agile, making them difficult opponents, and they will chase their targets over great distances. A surefire way to shake an unwanted dragon is to fly directly into Winterspring; the drake will despawn if a player flies far enough into the lower level zone.