Custom Result Objects & Setter

Hi, I started to use CI4 three days ago and today I'm facing a problem with "Custom Result Objects". Here is the class of my custom object :

PHP Code:

class Transaction
{
    protected int $id;
    protected string $name;
    protected float $amount;

    public function __get($key)
    {
        if (property_exists($this, $key)) {
            return $this->{$key};
        }
    }

    public function __set($key, $value)
    {
        if (property_exists($this, $key)) {
            $this->{$key} = $value;
        }
    }
} 


The problem is when I'm using the function "getCustomResultObject" the "__set" method is never called, attributes are directly updated. Indeed, I tried to modify the setter to update my attributes using the $key & $value variables to do some operations, but the setter is never called. That is strange because I saw in the documentation :

The object will have all values returned from the database set as properties. If these have been declared and are non-public then you should provide a __set() method to allow them to be set.

And indeed if I remove the "__set" method, I get a error message "Cannot access protected property App\Entities\Transaction::$name". So the __set method is necessary to update the "protected" attributes, but the method is never used. So is it a bug, or I missed something ?

Thanks for your help.