Yes, it's a bug, i said it was a bug in my post.
Not everyone will get it, but that does not make it any less annoying to the people it does happen, especially as how hard it can be to find a group for it.
My post wasn't an attack against yours sorry if it looked like it did. I quoted it because it described exactly the situation of my guildmates.
Putting a heroic 4 man at the end a long chain of solo quests is bad design, and certain to annoy fairly large chunk of the people doing it.
I don't agree on this point (because if I want to play solo I don't load on a MMO) The fact is that if the quest wasn't bugged it would be a lot less annoying ^^