Guild Wars 2

I need one last vista to clear out my map but some idiot built a ballista right on top of it and i cant click on the vista. its at desolation garrison on desolation borderlands. little help please.

wait 30 minutes of no use on the ballista and it will go away, alternatively, have you tried selecting(clicking floating paper) the vista

I ran into one of those one time. I found that if you moved around you could eventually target the vista. Try walking into, on, around the ballista.