User blog comment:DaNASCAT/Technical Update: November 22, 2011/@comment-1474707-20111129154519

So we're having a divider between edit button and content now? What about this? You vaguely talked about some A/B testing that meant removing the divider caused 11% more edits (despite the fact the change also included moving the edit button to a different, perhaps that had something to do with it, but no response from staff to that of course). So we scrambled to fix all the things this broke across our wiki, and railed against this change, but the staff were adamant the best thing is removal of the divider. And now, it gets slipped into a sentence with "we're helping distinguish parts of the page", in the hope that no-one will notice. Are all your reasoning for changes just a load of rubbish, to be vetoed at will? Why the change of heart Wikia?