Public channel posts privately
As an admin, I recently changed the default permission role for new channels to private.
A new channel X was created after that. It was as expected private.
Channel X overwrote this by setting themselves from private to public.
But still any new post's access rights is set to "friends" by default. Of course before pubishing the post, channel X can change it to "public" manually. But for automatically created posts, they cannot change it, so those posts will be published always as accessible for only "friends".
Such automatically created posts include those imported by the "Channel source" app, but also posts about new profile image or new profile title image.
Setting default permission role for new channels to public by the admin doesn't change anything for channel X.
How can I make the setting (permission role = "public") of channel X being respected?