I am currently trying to complete every story progress on my main character and have encountered Mount Hyjal. In Hyjal there is a story called “Grove of Aessina” which is supposed to be a breadcrumb auto pick up, but I somehow managed to progress past this point and the quest is not availble to pick up. I’m now hard stuck on this story and it’s really annoying.
I am aware that this quest has been bugged for several years and I hope that some kind hearted developer either can remove this storyline or make it available somehow.
You would need to contact the developers. There are no developers on the EU forums, and very few on the US bug reports forum. They prefer you to use the in-game bug reporting feature, as that sends not only your bug report directly to the developers, but also details of your client for troubleshooting purposes.
You probably got a US GM, as GM’s do actually work cross region, and a lot of the US GM’s always mean the US forums, where there is a bug reports sub-fora,