Protect the ritualists while they repair the shrines

[Zelse.9780]

This event is frequently bugged:

• The Ritualist Elder may be stuck by Kropa Village.
• The Ritualist Adepts may be at the Temple of the Dredge, hammering away, even though the event is not active. Resurrecting them when they are defeated will not unstick the event, nor will they seemingly progress while in this state.

[Dark.1823]

Did they ever fix this? I can't get the event to spawn. It's blocking my map completion.

[Korval.3751]

This quest is absolutely bugged for me in multiple map instances (I joined Canthian squads running event metas and make it a habit to briefly check to see if the "Protect the ritualists while they repair the shrines" has started or if the ritualist are waiting. In both case neither has happened. The quest appears to be universally bugged.