Foreman version: 1.3.0

When creating a new user, it gives an error when inserting characters with accents. The language was Spanish, but when you set an accent appears as invalid.

The foreman log (/var/log/foreman/production.log) includes the following:

Started POST "/users" for 10.227.21.69 at Wed Nov 06 11:26:08 +0100 2013
Processing by UsersController#create as HTML
Parameters: {"commit"=>"Introducir", "user"=>{"password"=>"[FILTERED]", "locale"=>"es", "role_ids"=>["", ""], "compute_resources_andor"=>"or", "admin"=>"1", "domains_andor"=>"or", "login"=>"aaguilar", "hostgroups_andor"=>"or", "facts_andor"=>"[FILTERED]", "firstname"=>"Prueba acéntos", "auth_source_id"=>"2", "subscribe_to_all_hostgroups"=>"0", "password_confirmation"=>"[FILTERED]", "lastname"=>"Prueba", "mail"=>"prueba@prueba.com", "filter_on_owner"=>"0"}, "authenticity_token"=>"96shS6ULxu2cSIlbOWd+w0yFwKvmwVe3VQstisQ2lFw=", "utf8"=>"✓"}
Failed to save: Nombre no es válido
Rendered common/_edit_habtm.html.erb (0.4ms)
Rendered common/_edit_habtm.html.erb (0.4ms)
Rendered common/_edit_habtm.html.erb (0.4ms)
Rendered users/_user_fact.html.erb (6.0ms)
Rendered users/_filters.html.erb (278.8ms)
Rendered users/_form.html.erb (307.0ms)
Rendered users/new.html.erb within layouts/application (307.8ms)
Rendered home/_user_dropdown.html.erb (2.8ms)
Read fragment views/tabs_and_title_records-1 (0.5ms)
Rendered home/_topbar.html.erb (5.4ms)
Completed 200 OK in 342ms (Views: 316.3ms | ActiveRecord: 8.1ms)

Attached screenshot of foreman.