I’m experiencing this on my site’s carousel/slider. I’ve found that deactivating the BuddyPress Template Pack plugin does restore the carousel, but BP pages suffer when that’s off. I’m scrambling for a fix. The site is http://tinyurl.com/9fmd4d5
My install was doing that as well. It took me a while, but playing with dev tools like Chrome’s “Inspect Element” let me isolate the CSS rules until I found the culprit. I did a cursory check on your site, but didn’t see where there was anything similar to my CSS solution. Good luck!