I'll add that the cooldown on Community Elder is also bugged, when the elder dies. It's 10 missions or something ridiculous.
So you can't assign a new elder for a whole island, and can't use the community meeting action (which has a separate cooldown).
Ideally the assigning should have NO cooldown, as only 1 elder can be active at a time.
Maybe the cooldown is as intended, my bad!
But I noticed that later elders lose faith even if NOT participating (-20 faith for EVERY mission, for godhood sake).
And a similar multiplicative debuff happens with Holy Judgement too, maybe other faith debuff traditions also?