I don’t know if this is a problem with WPML, ACF. The only thing that I know is that it does not happen on Chrome, IE or FF. I don’t have access to a computer with Safari, and I’m really not that familiar with it. What is needed is to inspect the elements, figure out what CSS is causing the layout issue and what plugin is adding that CSS and then contacting the author of that plugin to get them to fix it.
You can try submitting a ticket here http://support.advancedcustomfields.com/new-ticket/.
