Cached js broken with subdirectory URLs

I discovered that while caching of the js code is enabled, any pages that have a url longer than a primary 'folder' (e.g. site.com/customer/contact, site.com/node/435) does not work. Only single folders work (e.g. site.com/home). I'm not quite sure how to explain that properly, so I hope those examples work.

Looking at the HTML returned when caching is enabled, it appears that instead of linking to the cached js file in the correct location, it simply removes the last bit of the current URL and appends the js url to the end, resulting in a URL with the first part of the current URL still there.