I think this may have been a temporary thing when the new hidden post visible groups setting was introduced, which has now been superseded by the current behaviour?
Thanks for the reply. Is there a way to completely hide a flagged message for visitors (logged-out users) and users with trust levels 1,2,3 I know if you delete the message, it will appear only to admins/moderators, which is basically the same.
I think you may be able to target them with a little CSS. If you had the CSS Classes for Current User's Groups theme component I think you could do something like this: