Just got the quest from Zanetta Stormbreaker entitled 'You Call This Easy?' The objective is to defeat Orin Grimcaster, a boss in a nearby tower according to my map.
The issue? While the quest is still track-able, no arrow shows up for the quest helper guiding me to his location.
Possibly a bug or an error in scripting, i'm not the one to say for sure.
Thought i'd mention this to see if anyone else is experiencing an issue or has in the past. I know there was some sort of bug a couple of years ago where no one could get in to the tower so the history of problems with the quest leads me to my conclusion.
Of course, for any who experience this and cant find him, just hit 'M'
I've not only lost my questing arrow at times, i've even lost the x or mouse button icon that shows up for you to get reagents or harvest plants. Logging off then back on sometimes helps but not always with the quest arrow.