Quest: Following In His Footsteps.
This is a 5 part mission quest line for the Legion expansion Mage Hall. Four out of the 5 missions appeared sequentially on completion. However, the final mission will not appear.
I have reset my UI and disabled any addons by renaming the wtf, interface and cache directories.
This toon is not boosted and i went back at level 120 to complete the campaign. However, at this point, it is stuck.
Another person submitted this similar bug/issue in June but has had zero response also.