Utf-8 problem in group repeatable field

[bilalmalkoc]

`function shortcode_button_cmb_config( $button_data ) {

return array(
    'id'      => 'shortcode_' . $button_data[ 'slug' ],
    'fields'  => array(
        array(
            'name' => 'Başlık',
            'id'   => 'baslik',
            'type' => 'text',
        ),
        array(
            'name' => 'Simge',
            'id'   => 'simge',
            'type' => 'fontawesome_icon',
        ),
        array(
            'title'   => 'Listeler',
            'id'      => 'listeler',
            'type'    => 'group',
            // 'repeatable'  => false, // use false if you want non-repeatable group
            'options' => array(
                'group_title'   => 'Liste {#}', // since version 1.1.4, {#} gets replaced by row number
                'add_button'    => 'Liste Ekle',
                'remove_button' => 'Sil',
                'sortable'      => true, // beta
                'closed'        => true, // true to have the groups closed by default
            ),
            'fields'  => array(
                array(
                    'name' => 'Liste Başlığı',
                    'id'   => 'liste_basligi',
                    'type' => 'text',
                ),
                array(
                    'name' => 'Liste Alt Başlığı',
                    'id'   => 'liste_alt_basligi',
                    'type' => 'text',
                ),
                array(
                    'name' => 'Liste Açıklaması',
                    'id'   => 'liste_aciklamasi',
                    'type' => 'textarea',
                )
            )
        )
    ),
    // keep this w/ a key of 'options-page' and use the button slug as the value
    'show_on' => array( 'key' => 'options-page', 'value' => $button_data[ 'slug' ] ),
);

}`

It is my function. When i put utf-8 characters it shows different letters. This happens in only group fields. For example baslik field prints çğıöş => çğıöş But group fileds prints çğıöş => \u00e7\u011f\u0131\u00f6\u015f'