Problem with Model()->find() and Model()->findAll()

Hi! I have faced with problem with Model()->find() and Model()->findAll(). If i call ones of this methods i get null. It's doesn't work after update to 4.0.0-rc.2.1 with composer.

For example, i have model UserModel which based on BaseModel which extends Model. 

PHP Code:

class UserModel extends BaseModel
{

    private $user_uploads_dir;

    private $user_avatar_uri;

    protected $table      = 'users';

    protected $primaryKey = 'id';

    protected $returnType = 'array';

    protected $useTimestamps = true;

    protected $dateFormat = 'int';

    protected $createdField  = 'created';

    protected $updatedField  = null;

    protected $deletedField = 'deleted';

    protected $useSoftDeletes = true;

} 


Table users has 1 row with id = 1
When i try to get row from DB with find() or findAll() i get Null result. I don't known why it's happening.

PHP Code:

$items = (new UserModel())->find(1); // will be null 


PHP Code:

$items = (new UserModel())->where('id', 1)->get()->getRowArray(); // will be array with user data 


Tell me, please, what i doing wrong? I created issue on github.com, but jimm-parry redirect me to this forum.