[BUGS] BUG #14661: authentication behavior(SCRAM-MD5)

The following bug has been logged on the website:

Bug reference:      14661
Logged by:          Anthony Sotolongo León
Email address:      asotolongo@gmail.com
PostgreSQL version: 10beta1
Operating system:   Ubuntu 14.04
Description:

I have a pg_hba.conf like this:

host    all             usuario         0.0.0.0/0            scram-sha-256
host    all             postgres        0.0.0.0/0            scram-sha-256

and my user with md5 password encryption
select usename,passwd from pg_shadow ;

usename  |               passwd               
----------+------------postgres |      md50005a4b0ccaccbd18bcf64e90e242c90           usuario  |
md541f55d102ea5687e95fb361019a12da4       
 

and when try to  login,  login error, and return error 

2017-05-19 16:51:20.312 CEST [1418] FATAL:  la autentificación password
falló para el usuario «postgres»
2017-05-19 16:51:20.312 CEST [1418] DETALLE:  User "postgres" does not have
a valid SCRAM verifier.La conexión coincidió con la línea 83 de pg_hba.conf: «host    all           postgres
0.0.0.0/0           scram-sha-256»
 


i think that is correct, but when i have the next configuracion: 
pg_hba.conf 
host    all             usuario         0.0.0.0/0            md5
host    all             postgres        0.0.0.0/0            md5

and my user with SCRAM encryption
postgres=# select usename,passwd from pg_shadow ;usename  |
passwd                                                             

----------+-------------------------------------------------------------------------------------------------------------------------------usuario
| 

SCRAM-SHA-256$4096:Fhqo2W7V4FlVQk7+$fkQJ02YBGMhePbhVnKOcHjON/VPUTDzT/pZboiwHofY=:XliKl0leu/kpN4ZGmNPnHKKWj76f7qN8lIjrY8jOVcA=postgres
|

SCRAM-SHA-256$4096:5DcjppjZNyrGb0Jo$iomUsf0Mo0RSSjkwzhwHwRphhVG5EKLRRMVp/eiENuI=:XFIOQcd1nA1IKclPrVSwFym9N5dLuYB43CfI3Lf5zGA=
(2 filas)


and when try to  login, login successfully
is correct this behavior?

Greettings




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