After more Googling around, I found this:
http://support.advancedcustomfields.com/forums/topic/repeater-field-broken-when-using-category-php-file/
I already had something similar in my functions.php, but it obviously wasn’t quite right. This is the correct code:
//Include CPT In Categories Pages
function namespace_add_custom_types( $query ) {
if( is_category() || is_tag() && empty( $query->query_vars['suppress_filters'] ) ) {
$post_types = get_post_types( '', 'names' );
$query->set( 'post_type', $post_types);
return $query;
}
}
add_filter( 'pre_get_posts', 'namespace_add_custom_types');
Still, respect for the help ractoon!
