http://forum.webflow.com/t/slider-pause-on-hover/1123
^^^ States that Webflow does not currently support pausing sliders on hover besides the stock/built-in pause onClick of child elements.
Seems silly to restrict the flexibility of this component just because Webflow staff thinks it isn’t necessary, but, hey, it’s your guys’ product after all.
However, that was merely one bug out of the two being mentioned above. The slides still are not applying the transitions, and the slide below the previous is still not stacking. See your own http://sliders.webflow.com/