See https://en.wikipedia.beta.wmflabs.org/w/index.php?title=Foobar&action=edit&undoafter=383159&undo=385014 You will see a label that says "Damaging/Bad-faith". But that's wrong. The edit that is being undone has no labels.
E.g., see https://en.wikipedia.beta.wmflabs.org/wiki/Jade:Diff/385014