I am changing the artist (to another one with the same name, using direct search). Then I tab out of the artist field and onto the name one (I think it consistently didn't happen when navigating with the mouse, although I can't assure it happened every time I tabbed), and I edit that too (caps fixing). I press enter and get this:

Error:

Caught exception in MusicBrainz::Server::Controller::Recording->edit "Can't call method "value" on an undefined value at /usr/local/share/perl/5.10.1/HTML/FormHandler/Field.pm line 89."
Stack trace:
line 12 MusicBrainz::Server::Form::Field::Length
line 11 MusicBrainz::Server::Form
line 126 MusicBrainz::Server::Controller
line 37 MusicBrainz::Server::Controller::Role::Edit
line 270 MusicBrainz::Server
Request data:

$VAR1 = {
'query_parameters' => {},
'body_parameters' => {
'edit-recording.artist_credit.names.0.artist.id' => '828969',
'edit-recording.edit_note' => '',
'edit-recording.artist_credit.names.0.artist.name' => 'Alto Voltaje',
'edit-recording.artist_credit.names.0.name' => 'Alto Voltaje',
'edit-recording.artist_credit.names.0.join_phrase' => '',
'edit-recording.comment' => '',
'edit-recording.length' => '?:??',
'edit-recording.as_auto_editor' => '1',
'edit-recording.name' => "As\x

como hoy",
'gc-mode' => 'Sentence'
}
};

URL: http://musicbrainz.org/recording/4d56f8fc-4de0-41b0-8fe8-1f5d94b8d5cf/edit