Problem with default value of field types

Hi,

i'm using latest plugin version. Today i noticed, that my custom fields of types (text, datetime, .. and maybe other) have a default value of empty brackets "[]" - if i setup "std" to another default value, nothing is happen - still the brackets. If i change value to something and make save, the value is correctly saving..

Next, i have noticed, that developer console only on settings page has "Uncaught ReferenceError: QTags is not defined".

add_filter( 'mb_settings_pages', 'mb_v2018' );
function mb_v2018( $settings_pages ) {
    $settings_pages[] = array(
        'id'          => 'v2018',
        'menu_title'  => __('Settings',TEXTDOMAIN),
        'parent'    => 'edit.php?post_type=vol2018'
    );
    return $settings_pages;
}

...

$meta_boxes[] = array(

    'id' => 'vol_options',
    'title' => __('Options',TEXTDOMAIN),
    'settings_pages' => 'v2018',
        'fields' => array(
        array(
            'name'    => __('Something', TEXTDOMAIN ),
            'id'    => "{$prefix}something",
            'type'  => 'text',
            'std' => 'test'
        )
    )
)