Flex Users storage problem

[Sogl]

I want to store users in accounts\username folder.

In my config\system.yaml:

accounts:
  type: flex
  storage: folder
  avatar: gravatar

I copied system/blueprints/flex/user-accounts.yaml to user/blueprints/flex/user-accounts.yaml. Data configuration part:

  # Data Configuration
  data:
    object: 'Grav\Common\Flex\Types\Users\UserObject'
    collection: 'Grav\Common\Flex\Types\Users\UserCollection'
    index: 'Grav\Common\Flex\Types\Users\UserIndex'
    storage:
      class: 'Grav\Common\Flex\Types\Users\Storage\UserFolderStorage'
      options:
        formatter:
          class: 'Grav\Framework\File\Formatter\YamlFormatter'
        folder: 'account://'
        pattern: '{FOLDER}/{KEY}{EXT}'
        indexed: true
        key: username
        case_sensitive: false 

All should be fine but users are saved to hashed folders:

As you can see with Xdebug, pattern and storage_key are wrong (not from our storage configuration):

Ok. I can extend UserObject to my custom to override save() func:

<?php

declare(strict_types=1);

namespace Grav\Plugin\SoglFlex\Flex\Types\Users;

use Grav\Common\Grav;
use Grav\Common\Flex\Types\Users\UserObject as DefaultUserObject;

class UserObject extends DefaultUserObject
{
    /**
     * {@inheritdoc}
     * @see FlexObjectInterface::save()
     */
    public function save()
    {
        if (!$this->exists()) {
            $this->setStorageKey($this->getProperty('username'));
        }
        parent::save();
    }
}

Much better but still triple nesting:

BUT when I try to override class: 'Grav\Plugin\SoglFlex\Flex\Types\Users\UserFolderStorage' it just not fire.

It looks as if the entire storage section is not being read, but the default values are being used.

@mahagr How to fix?

[Sogl]

After hours of debugging I found that if I write in config\system.yaml:

accounts:
  type: flex
  storage: SOMETHING
  avatar: gravatar

My custom class works fine and also all other storage options from user-accounts.yaml.

However, each time of Configuration saving (in Admin panel) storage: SOMETHING will be overwritten. Need to add +1 value for custom or something else: