My sticky menu was working on every page until I implemented the Responsive Grid for Articles module. Now, just on the page using this module, the sticky menu does not stick and there is an error in javascript console as shown below. The page on my site (uncached version) is https://www.ufcinc.com/Product-Videos/product-videos-abbyy?nocache
Uncaught TypeError: Cannot read property 'top' of undefined
at product-videos-abbyy?nocache:497
at dispatch (jquery.min.js:2)
at v.handle (jquery.min.js:2)
What strange is that my dev site is a near exact copy and it does not display this error. It's been driving me nuts to figure this out. Any ideas anyone?