12c bug - PDB spfile parameter showing into v$spparameter with wrong con_id

When changing a parameter in spfile of a pluggable database, the change is visible in V$spparameter view for PDB con_id (5), but with wrong con_id (0). This is a known bug:

Bug 16682595  SPFILE / V$SPPARAMETER problems with PDB

SQL> show con_name

CON_NAME
------------------------------
PDB3 

SQL> alter system set ddl_lock_timeout=30 scope=both;

SQL> select con_id, name, value from v$spparameter where name='ddl_lock_timeout' ;

    CON_ID 
----------
NAME
-----------------------------
VALUE
-----------------------------
         0
ddl_lock_timeout
30

Connected to the PDB we check the value of the parameter and the con_id from v$parameter view: 

SQL> show parameter ddl_lock_timeout;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ----------------------
ddl_lock_timeout                     integer     30

SQL> select con_id, name, value from v$parameter where name='ddl_lock_timeout';

    CON_ID
----------
NAME
----------------------------
VALUE
----------------------------
         5
ddl_lock_timeout
30