Why does Symfony debug:messenger command show my messenger handler twice when I use AsMessageHandler attribute?

Question

My Symfony 6.2 bundle has an handler like the following

use Symfony\Component\Messenger\Attribute\AsMessageHandler;

#[AsMessageHandler]
class MyHandler {
    public function __invoke(MyMessage $message): void {
    }
}

When I run the bin/command debug:messenger command I got this output, with the handled part shown twice

  MyMessage                                            
      handled by MyHandler
      handled by MyHandler

Instead, when I use the deprecated method of implementing the MessageHandlerInterface instead of the attribute as follow, the debug command correctly shows only one handled row

use Symfony\Component\Messenger\Handler\MessageHandlerInterface;

class MyHandler implements MessageHandlerInterface {
    public function __invoke(MyMessage $message): void {
    }
}

I am expecting the attribute version to show one handler like the deprecated version.