User blog comment:Rappy 4187/Technical Update: September 18, 2012/@comment-1474707-20120919160558/@comment-4674838-20120920202542

Starfleet Academy:
 * 1) ShowHide is a front-end script that is not part of Wikia's codebase. Wikia is not responsible for building or maintaining the scripts you see on w:c:dev, those are written and maintained by users like yourself. (In this case, Grunny maintains ShowHide -- but only in his capacity as a user, it has nothing to do with work he does for Wikia)
 * 2) The recent bug with the ShowHide script was caused by a minor inconsistency when Wikia upgrading their version of jQuery to 1.8.1 and has no relation to what Acer and I were talking about here with Special:RecentChanges. ShowHide has now been patched and is working properly. However, if you wiki has a local copy of it (maybe at MediaWiki:Common.js/ShowHide.js or something like that) then obviously it's still going to be broken -- make sure to change your import to using the Dev Wiki's version which has been fixed.