I changed from HC to normal world tier hoping it would stop the lag (it didn’t) but in the progress it completely auto-completed the campaign (without corresponding achievements) and skipped me directly to feeding Thalyssra after the 11/11 campaign completion. Anyone else had that? :s The quest Khadgar gave me to follow the message bricked as a result too and became uncompletable, since it was technically already completed.
Are you playing a Nightborne? If so that is why.
Nope, orc. It’s letting me progress now after some hours, but it’s still flagging as fully completed.