Board Thread:Moderators/@comment-112155-20170228204202/@comment-10473115-20170228222145

I think that the company has changed rights:

"Users in the 'rollback' group will no longer be able to edit other people's Wall and Forum posts, as this was not intended behaviour."

Source: http://community.wikia.com/wiki/User_blog:DaNASCAT/Technical_Update:_February_27,_2017