UPDATE: So I was looking at my maps and saw this FATE HAD commenced, so I high tailed it there. Of course, by the time I got to the spot, I saw a Failed message, so I sat to wait. Gave up after waiting over 20 mins... it went from daylight to deepest night.

Like I said VERY bad design... so easily solved by putting a NPC in there to trigger it. As it HAS been an issue for 3 years, doubtful it will really get addressd, shame.