I was having the same problem and then got area closed and was not allowed to leave a tower in DragonSpry then finally ported out to someone and quit for the night. Hope it is better today. I don't like having to reset my quests all the time.
Throughout Dun Dara and doing Gwendolyn's quests from Abbey Road, the arrow kept switching to point to Sylster Glowworm in Waterworks! Not very helpful, being directed to the wrong world entirely, is it?
I am having the same problem. I posted a message here about it before I saw your message.
I was just doing a dungeon and every time I got a new quest in the dungeion the quest help went to one of my quests on a different world.
This may have started when KI changed the quest helper on Wizard World and Krok to not go to stay on the main quests when picking up a side quest.
This is a bit annoying, I hope they can change it.
This happened to me in a dungeon as well. We all know it isn't as simple as going into a dungeon and defeating Krokotep (as an example); there are several steps, ie, quests to be done prior. Did the quest arrow change to the updated quests necessary to get to the boss? No.
How is someone who has never played this game before supposed to know what to do? I mean seriously. They'll follow the arrow and won't be able to figure out why they can't get to the boss to defeat him.
BAD move, KI... no thought put into how this would affect game play at all. Please change it back!