This plugin does not "hide" anything. It just use a div tag to hide the content in the browser window, but de "hidden" content is in the webpage and not even protected somehow. So better than anoying the visitors (and loosing them) just leave the share buttons at the bottom.
Even with chrome if you delete the div tags you even see the content without the need of like anything.
Also the facebook button doesn't work, at least with w3 total cache and cloudflare. Google and twitter they do, so i think this could be the plugin itself and not the caching system (it doesn't worth the effort to test it futher...)