Forum:Tabber broken

OK recently this has come up repeatedly so thought I should bring it up here; but for the record the previous discussions on it - Talk:Lord English, User talk:The Light6, and another user attempted to fix what they thought was the problem, unsuccessfully. Now I don't experience this glitch myself but with at least 3 different users complaining about it I think it needs to be looked at, because who knows how many viewers are experiencing it without saying anything. Unfortunately I have no knowledge of javascript so if anyone has an idea, please say so; also the tabber coding can be viewed here: MediaWiki:Wikia.css (Also in case this problem is connected OS + browser, my unaffected combination is Windows 7 + Firefox.) - The Light6 (talk) 02:54, October 1, 2012 (UTC)