I have traced it down to function acf_maybe_get_sub_field(). This is part of the function:
if ( ! is_array( $selectors ) || count( $selectors ) < 3 ) {
return false;
}
The number of $selectors is 2 so it fails. Should there be a three?
If I print_r($selectors) I get:
Array ( [0] => field_64b38c4e3ec56 [1] => field_64c782fc4c55d )
…meaning there are only 2 selectors and I guess it is expecting a min of 3, right?
