In addition, Facebook is adding an "Edit Public Details" button directly to your profile, which will make it easier to adjust what information about you is publicly visible.
Today, we're making it easier for people to manage their publicly visible information on Facebook with two updates: (1) we’re bringing back the “View As Public” feature and (2) we’re adding an “Edit Public Details” button directly to profiles. pic.twitter.com/zI5bVwodjp— Facebook (@facebook) May 14, 2019
Facebook removed all "View As" features in September 2018 after a vulnerability with the feature allowed hackers to steal Facebook access tokens for almost 50 million accounts.
Facebook now says that the "View As" feature for viewing an account as a member of the public was not affected by the security incident and was more popular than the "View as Specific Person" options that are still disabled.