Rewrite this file:
x_base/sxsbase_class.php

around line 1128  1495

        $sql="select field_sn,field_matter,field_detail from ".$xoopsDB->prefix("sxs_field_def")."  where field_name='$field_name' order by field_sn";
change into

        $sql="select field_sn,field_matter,field_detail from ".$xoopsDB->prefix("sxs_field_def")."  where field_name='$field_name' order by field_detail,field_sn";