I believe I am encountering this same bug. Observing this post (a share to my page) while logged out seems to suggest that @tamkit added a post of some sort, but viewing the post while logged in will show only the OP's artwork. My impression is that the "require log-in" information is leaking because of who I shared from.
Juhani Krekelä
Open this example post while logged out. You will get UI that suggests there is a reply before @DecayWTF's one, with the message "This page's posts are visible only to users who are logged in". If you are logged in, however, there is no such post. As far as I can tell this is caused by @DecayWTF's reply having been made to a version of the post rebugged by a page whose posts are only visible to logged-in users.
1 person has this problem