edit

src/Database.php

@@ -3595,6 +3595,8 @@ class Database
             $this->chart['data'] = array();
         }
 
+        $data = array_reverse($data);
+
         if ($config['x'] == $key) {
             $this->chart['x'][] = $data;
         } elseif (in_array($key, $config['data'])) {