https://meta.discourse.org/my/deleted-posts
Admins (staff) see the link in the user profile on the top in the black strip. (There is a summary with flags, posts and suspensions)
When you click the link you see the list of posts but it’s different from what you can see in the activity tab. Previously it was pretty much similar and you could click from each post into the relevant topic where you would see “hidden post” in the topic view.