Problem with insertion Client User Mysql

A client of mine has created a database with user and password of the type
database: Name
user: nomeuser_database
password: @ ... L ...

saving user in the control panel is properly visible, while in mysql does not exist.
This error does not happen with version 1.1.13

Debian wheezy
php-fcgi
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google translate

My client has created a database with user and password, now this database is visible inside the control panel but not in phpmyadmin

No error to user or password incorrect.

Quote from BeNe

You can see the new created database inside i-MSCP but it does not exist on the MySQL Server itfself ?

Yes

Quote from BeNe

Can you login with the created user ?

error to user or password incorrect

any help on how to solve?

I will do this Wednesday when back at the office, I am now out of the area for work.