Doctrine_Record seems to have a bug with default values when updating

So lets see the table:

User:
tableName: users
columns:
id:
type: integer(1)
fixed: false
unsigned: true
primary: true
autoincrement: true
username:
type: string(32)
fixed: false
unsigned: false
primary: false
notnull: true
autoincrement: false
password:
type: string(48)
fixed: false
unsigned: false
primary: false
notnull: true
autoincrement: false
role:
type: enum
fixed: false
unsigned: false
values:

• admin
• support
  default: support <----- Unable to render embedded object: File (ROOT OF EVIL) not found.
  primary: false
  notnull: true
  autoincrement: false

So lets say we have a user with `role` = 'support' and want to set em
'admin' we wrote

$user = new App_Model_User();
$user->assignIdentifier(1);
$user->role = 'admin';
$user->save();
var_dump($user->toArray());

in debugger we see SQL query been made:

1. [0.55 ms] UPDATE users SET role = ? WHERE id = ?

• bindings: admin
• 1

array(6)

{ ["id"]=> int(1) ["display_name"]=> string(13) "Administrator" ["username"]=> string(4) "root" ["password"]=> string(40) "45bb0f589525a2f0f2a48620bb59b1b8baef0c1d" ["role"]=> string(5) "admin" ["is_active"]=> bool(true) }

Superb! Works as it should! So lets now set role of this user back to
'support':

$user = new App_Model_User();
$user->assignIdentifier(1);
$user->role = 'support'; // This value defined as default in scheme,
thats why have problems
$user->save();
var_dump($user->toArray());

in debugger we didnot see any UPDATE queries! However object is been
changed, results just has not been flushed to database.

array(6)

{ ["id"]=> int(1) ["display_name"]=> string(13) "Administrator" ["username"]=> string(4) "root" ["password"]=> string(40) "45bb0f589525a2f0f2a48620bb59b1b8baef0c1d" ["role"]=> string(7) "support" ["is_active"]=> bool(true) }

I cant overcome this problem right now, unfortunatelly (well I can
just remove all default values from table definitions or use
Doctrine_Query for updating staff.. but I'd like to use models

However if I use Doctrine_Query of even

$user = Doctrine_Core::getTable('App_Model_User')->find(1);

instead of

$user = new App_Model_User();
$user->assignIdentifier(1);

updates works well...