so you are saying that

oscarw — Tue, 08 Dec 2015 06:24:32 +0000

so you are saying that ejabberd doesn't support revoking owner?
according to XMPP:
A service MUST NOT allow an owner to revoke his or her own owner status if there are no other owners; if an owner attempts to do this, the service MUST return a error to the owner. However, a service SHOULD allow an owner to revoke his or her own owner status if there are other owners.
If an implementation does not allow one owner to revoke another user's owner status, the implementation MUST return a error to the owner who made the request.
Note: Allowing an owner to remove another user's owner status can compromise the control model for room management; therefore this feature is OPTIONAL, and implementations are encouraged to support owner removal through an interface that is open only to individuals with service-wide admin status.

but why if i use ejabberdctl to change affiliation to none, it works fine?

I think it isn't allowed to

badlop — Fri, 27 Nov 2015 11:15:41 +0000

I think it isn't allowed to remove ownership oneself in ejabberd. It isn't a bug, it's implemented that way.

ejabberd - Comments for "rovoke owner affiliation"

so you are saying that

I think it isn't allowed to