At which places are PMs suppressed?
I just activated the setting and created a category which I limited to a group I am not a member of. That worked as described. I don’t see that category in the categories list.
I also noticed that clicking on a link to a PM takes me to the “this page is private” page. But I am still able to read parts of PMs at other places. So I guess I misunderstood the feature.
For example, I can read the beginning of the message when checking which posts a user liked or reacted to, which I often do (except when I am an admin).
The same happens at the bookmarks activity.
And when I check the deleted posts.
I can also still see the titles of the messages in the user’s inbox and the inboxes of groups I am not a member of.