Got it right after a short search in May 2017
Get the same error!
JS Console reports the same message.
- Added the code to the function.php in my child theme
- Replaced xxx with key for Google Maps JavaScript API
I use ACF 5.5.14 with WP 4.7.5
Thanks for a hint!
Christian
I wish I could confirm this, but unfortunately it is not so. All tabs are in one field group.
Here is a backend screenshot.
I can give you access to the backend, if you want.