Thread:Extension talk:Header Tabs/Doesn't work on MW 1.20.2 with IE, Firefox, and Safari/reply (2)

If you could elaborate on the fix, would be greatly appreciated. We've found the same issue when upgrading just from 1.19 to 1.20.2

Our issue appears to be with the CSS, it's not loading the class names properly for the headertabs div and subsequent ul/li.