We all know that in this moment all quest achievement are showing 0/xxx due to a UI glitch but they're still in the database. What is not working is that the shadowfen achievment has not been retroactively granted. I had 61/62 before they lowered it to 51 in the patch, but it is still missing. Look at the Hero of the Ebonheart Pact achievment in the attached screenshot: all past achievement are granted, even if actually they show at 0/xxx, but Shadowfen is still missing