According to
PC/Mac Patch Notes v2.6.8, under
FIXES & IMPROVEMENTS, BASE GAME PATCH: Quests & Zones,
Deshaan, "Vision Quest: Fixed an issue where you were unable to complete the quest step to examine the gate."
This is not quite true. Take a look at this picture:
http://imgur.com/a/dSB4l
The quest marker still points to a maulborn guard instead of the scamp that is supposed to unlock the gate for me (I had to abandon the quest to take the screenshot).
I was actually excited that a quest that had been bugged for years now had finally been fixed, so I must say I'm slightly disappointed. Do take a look
@ZOS_KaiSchober @ZOS_GinaBruno