Bug: WITH Table Statements Interfere Between Them

When I create a statement of the type:

WITH t_aux

AS

(

)

SELECT

   *

FROM

   t_aux;

It interferes the temporary table created in the first WITH in the next one:

WITH t_aux_dummy

AS

(

)

SELECT

   *

FROM

   t_aux;

I understand that with WITH statement, created temporary tables shall be SELECT query specific.