I know this is old but since is still unsolved, and i had the same issue with input.js
the solution i came up with was force brute radical but it seems to work… i just commented out the part that adds up that file in acf.php
// register acf scripts
$scripts = array();
$scripts[] = array(
'handle' => 'acf-field-group',
'src' => $this->settings['dir'] . "js/field-group{$min}.js",
'deps' => array('jquery')
);
// $scripts[] = array(
// 'handle' => 'acf-input',
// 'src' => $this->settings['dir'] . "js/input.js",
// 'deps' => array('jquery', 'jquery-ui-core', 'jquery-ui-datepicker')
// );