field autocomplete + clone

[batosai]

Autocompletion with the clone type results in an error. After analyzing the code, I contact that in clone mode an empty value is sent to the value method of the RWMB_Clone class awaiting an array. This is due to $ _POST [$ field ['id'] which does not exist because the autocomplete returns nothing if it is empty, this field is created by javascript in case of selection.

file inc/meta-box.php l208

To solve this by waiting for evolution, the solution is pass its field group, then to add its field autocomplete inside with another field of type hidden without value (not pollute db)