I can’t comment on your other post, but you say my issue at the lunker sighting is not about phasing, although I’m pretty sure it is. We are all in a raid group (members would typically be in the same shard as the party leader and if they are booted to another shard it would be as a group) and the error message on the raid frames is about joining the proper phase, so it is not exactly the same as the others.
I’m happy to have more attention on both issues, however. I was about to fight Fyrakk’s disciple just now as it landed and everyone in my shard moved to one that was at 0% event progress and the disciple despawned. This type of thing has been happening for awhile, though; I reported the same problem almost a year ago.