Hi James,
I realized this as well, and it turns out there is a conflict between the latest version of ACF (5.3.5) and the latest version of the WPML plugin from Sitepress (3.3.6). Downgrading the WPML plugin to a previous version seemed to fix the problem.
Thanks for looking into this.
-S
Hi James, please see my updated question with attached images. I’m fairly certain its caused by a JS error with select2.js.
Sorry if I wasn’t clear enough, I was only referring to WP Admin in this case. Linking the two at the front is not a problem.