Thread:SomeoneYouUsedToKnow/@comment-24993958-20171105220811/@comment-4010415-20171105232851

That's an undo, not a rollback. There's a difference between the two.

Everyone can do an undo, and it shows up in the Recent Activity.

Only people with Rollback privileges and above can do a rollback, which

1. Doesn't show up on the Recent Activity and also removes any sign of the other person's edit having taken place at all from the Recent Activity, unless the wiki decides to be glitchy.

2. If the same person edits a page two or more times in a row, clicking "Rollback" will undo all of their edits back to how it was before their repeated edits. "Undo" only undoes one single edit, so some people think they can cheat it by editing twice in a row.