How do you handle groups that aren’t visible to the user?
For example, you have secret_group that is only visible to admins and public_group that is visible for everyone, and users are allowed to join.
Now there is a category that allows posting for both groups. Will users of public_group see the name of the group they shouldn’t know about in this case? Will users in secret_group see both groups, even though the group is invisible for them?