Steps to reproduce
- Using a suppressor account, completely block and suppress an user (User:Abusive username in my example), i.e. block talk page and emails, and select "Hide username from edits and lists"
- While logged out, view Special:Contributions/Abusive username
- Observe the toolbar at the top of the page.
- The page does not show any indications that the account exists.
- Links to user talk, logs, etc, are shown, while they are not shown for non-existent users.