I updated my WPML to the latest version as suggested by the ACF support team and I don’t have the error anymore.
I used to have WPML Multilingual CMS 3.0.2 and since my subscription was expired I didn’t have a notification to update the plugin. Now I bought the 4.1.2 and everything is running smoothly.
I’m having the same issue here. I commented-out the line 71 but I wonder what features I am disabling by doing so?
Is ACF team working on this problem?