Need help on oracle to frenzyheart change

Hello! I have been playing for a long time, and back then i did "A Hero's Burden" and chose the Oracles, but without doing the full questline. I just killed the lich and moved on

Now i can't start the questline with "The Part-time hunter" because the frenzyheart are hostile and can't change from killing the lich (probably because i haven't done the questline)

Can something be done about this? Thank you

(I sent a In-game ticket which was answered but GM can't do anything about it, and i should post on bugtracker. There is a 2 months "unconfirmed" report there from someone else https://www.warmane.com/bugtracker/report/71477)

bumping this for a friend. I walked him through the whole list of quests to be sure he wasn't stuck somewhere in the questline. after killing the lich he was unable to switch factions.

Seems like a bug to me, so I went and up-voted all the related bug tracker reports.

No solution so far to speak of.