It appears you are using W3TC. Great plugin. I use it too. However, you have the JS being minified on auto, my guess. Even though the JS file for Connections is compatible, not all plugin’s and theme’s JS files are. And when the are minified together they cause fatal errors that prevent the scripts from working fully. That is what is happening for you. If you disable the JS minification things will work correctly. You can still use this feature in W3TC but you should use the manual method that way you can exclude plugin’s and theme’s JS file that do not minify well with others.
Hope that helps.