Conflict with Google PageSpeed Module - mod_pagespeed

I am running into a problem today with node/add forms that contain fieldgroups and and served from a Centos apache server with google's PageSpeed module enabled. The pagespeed module works fine with content from all sorts of Drupal content (site has hundreds of modules, dozens of content types, panels, views, etc, etc).

The only problem is with forms that contain fieldgroups. These node/add forms are rendered but js does not run and an error is reported that mod_pagespeed has failed. When fieldgroups are removed the form loads normally.

Disabling the google apache module, modpagespeed also solves the problem and allows node/add forms with fieldgroups to load normally.

I know there is not much that can be done with this report, but I wanted to add it for reference should anyone be encountering a this strange (and somewhat intermittent) problem with Fieldgroups.

I will continue to test and report back if I find anything, for now I opted to disable mod_pagespeed as the Fieldgroup is incredibly useful for organizing my node/add forms!