Forum posts coming in once per forum instance
Interesting phenomenon that appeared recently (several days ago):
If a forum is cloned, I receive each post once per instance, i.e. once from the main instance and once from each clone. For example, if a forum has two clones, I get three independent copies of each forum post.
When I comment on one of them, the comment is not sync'd to the others. And I guess my comment is only forwarded to the other members if I comment on the copy of the post from the main instance.
Also, comments from others only seem to appear under the copy of the post from the main instance, not under the copies from the clones.