Hello,
I've run into an issue with my site using MediaPress. When I activate MediaPress on my Twenty Fourteen site, I cannot toggle the menu dropdown on mobile. (Twenty Fourteen switches to a mobile layout with a toggled top menu in smaller screens). When I have MediaPress enabled, I cannot toggle the menu. When clicked, nothing happens. However, this only happens on cached pages with W3TC. When I am logged in to my site, the menu works fine (I am not being served cache when logged in).
Could you help me solve this?