I've bug reported this via console help ticket and was told to abandon or log off for 15 minutes. The fact that it has occured with multiple guild members with the daily quest, thus preventing completion Is UNACCEPTABLE.
On EU it's intermittent. It's works fine one day and the next it's broken again. Also, the Queen's Hatchery is respawning almost instantly so I wonder if it's connected?
I don't see how abandoning or logging off can possibly help as it's a game wide problem, not just something effecting one person. Or are support saying the Gryphon's hate you personally? "If you go away I'm sure they'll be fine..."
On PC I looked up my guild members who where in Summerset and travelled to them one at a time until I came into a different instance.
It seems like there is one instance that gets bugged and then it does not re-spawn (I saw some people reporting that they had been waiting +/- 2 hours for a re-spawn).
I had this to. So I went back to the wayshrine and I logged out. I waited a while. Then logged back in en went back to the gryphons and they where there. Maybe you can try that to.
Came here to report this issue too. Understand its an old thread but don't want to start a new one if its already on main page. Xbox EU here, have been trying to do this world boss for 2 days. No spawn at all. Quite frustrating.
I have probably waited for over 2 hours across the 2 days. Came back today after my first visit (went and did something else for approx 2 hours) and some poor soul had just been waiting the whole time. ZOS really need to make sure dailies are working before featuring an entire event round them.
@ZOS_GinaBruno is this being addressed? Assuming it's too late to expect a fix before the end of the event. Currently have this daily on two alts so guessing I'll just have to drop them and eat the waste of a day.