Not loading scrollbar in Firefox

Hi,

I have managed to setup your plugin with no issues as such. I can visit the URL on Chrome or Safari and the result is what I expect, however when the same URL is loaded in Firefox it seems the browser doesn’t load the content the same. It doesn’t show the table element (target element selector I chose) I think this may just be a table issue as I have tried using the Scrollbar feature on another element, text element, and the scrollbar works fine in Firefox. You can visit the test page I am trying to get this to work on here

The page I need help with: [log in to see the link]