Guild Wars 2

I have been working on the area completion on Metrica Province, and have completed everything including every Vista. When on map view looking at the red triangle icons, all 9 show as completed. However, the sidebar shows that I have only completed 8/9, and will not give me the reward. I have revisited each Vista, but this has not solved the issue. Any ideas?

There is a hidden vista in a cave just south of the starting point where you enter Metrica Province from Rata Sum. Do you have that one?

Might try gueting to another server just to see if it helps at all.

Doubtful, but you never know.