MySQL no record but increase the pointer

Question

I work with Medoo, MySQL Framework, when I try insert a new record, I can't but the pointer in the table increment. If I debug the sentence and execute the sentence in SQL Editor, works fine. MySQL engine is innoDB.

$db->insert("adicionales_clientes", [
   "categoria_adc" => 100,
   "fecha_adc" => $importante->data2_tab3default,
   "titulo_adc" => $importante->data1_tab3default,
   "tipo_adc" => 3,
   "cliente_adc" => $cliente,
]);