As I said before, it does look like a memory limit issue, however I’m not seeing any debug message with the usual “Allowed memory size of xxx bytes exhausted”.
I tried increasing memory limit via php.ini, htaccess, wp-config.php with no joy.
Funny thing is that if I use a relationship field instead of post object or page link, it works fine (and that’s how I solved the issue for the time being…).
Thanks again Elliot for your support
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users