Hi,
We just had the exact same issue with ACF 5.0.8 and WPML 3.1.7
We just resolved it by changing WPML options :
WPML > Translation Management > Multiligual Content Setup > Custom posts
We had to check
– “Translate” for “Fields Group” and
– “Do nothing” for “Fields”
Everything seems to works fine know but we’re still checking.
Hope it helps.
Bye