Has anyone else run into this? I've had a dramatic increase in quests bugging out, to the point that I've had to abandon them to reset (relogging, restarting client, turning off all addons, etc, has not worked) across both several PC-NA and PC-EU accounts. I've noticed a couple of times other players running around who seemed to be having a similar issue (in the Wrothgar intro quest, it looked like a bunch of people couldn't talk to the innkeeper in Orsinium because he wasn't spawning). So there were people just standing around, running back and forth confused, etc.
I've had one of the Psijic quests bug (got 9 portals, it only registered 8/9, I went back through and checked all the locations and they were all showing the small golden "closed" state) so I had to abandon it and restart that one, as well.
There have been a few other similar examples that were less significant - side quests that I just abandoned and didn't bother picking up again.