We can verify that this is the issue!
This happens when a repeater field includes a post object field.
(We also see that in the case where repeater has a post object the memory load on the server goes to the sky, and in some cases it breaks the limit:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 71 bytes) in /var/www/alwaysfootball.dk/public_html/wp-includes/meta.php on line 578
This could be related – but not verified)
