edit

src/Database.php

@@ -1902,6 +1902,8 @@ class Database
                     $mul_state = false;
                     if ($config['manage']['mul'] && is_string($config['manage']['mul'])) {
                         $mul_state = $this->value($config['manage']['mul'], $data[$k]);
+                    } else {
+                        $mul_state = true;
                     }
                     if ($mul_state) {
                         $checkbox = '<input type="checkbox" name="mul_where_id[]" class="checkbox-checkall-list" lay-ignore value="' . $v['id'] . '"/>';