Hi,
I tried to set default_user_state = 0, but it's make state = null in database

I think the cause is : ZfcUser/Service/User.php ; line 91 to 96

// If user state is enabled, set the default state value
if ($this->getOptions()->getEnableUserState()) {
     if ($this->getOptions()->getDefaultUserState()) {
        $user->setState($this->getOptions()->getDefaultUserState());
    }
}

Line 93 ($this->getOptions()->getDefaultUserState()) doesn't work with null/0 value

Am I wrong ?
Thanks