Board Thread:Support Requests - Getting Started/@comment-5431054-20130228074255/@comment-168424-20130228194717

Are you sure Sliders used to expand images to fit? You may be thinking of Slideshows. Sliders have always required fixed image sizes, as far as I know. The size required may have changed and users may not have followed the requirement, but Wikia never supported expanding the images to fit.