Problem with multiple services using the same class

(As @pamil requested, posting it here):

I noticed that when you have two (or more) services of the same class, only the last one seems to take effect.

Config in behat.yml.dist:

....
default:
    extensions:
        FriendsOfBehat\ContextServiceExtension:
            imports:
                - "vendor/sylius/sylius/src/Sylius/Behat/Resources/config/services.xml"
                - "tests/Behat/Resources/contexts.yml"
                - "tests/Behat/Resources/pages.yml"
...
cached:
    extensions:
        FriendsOfBehat\ContextServiceExtension:
            imports:
                - "vendor/sylius/sylius/src/Sylius/Behat/Resources/config/services.xml"

Steps to reproduce:

1.) Create a class

namespace Tests\Behat\Context\Hook;

use Behat\Behat\Context\Context;

/**
 * @author Wojciech Górski <wojciech.gorski@bitbag.pl>
 */
class Something implements Context
{
    /**
     * @var string
     */
    private $message;

    /**
     * @param string $message
     */
    public function __construct($message)
    {
        $this->message = $message;
    }

    /**
     * @BeforeScenario
     */
    public function doThings()
    {
        echo 'Does things for: ' . $this->message;
    }
}

2.) In my Resources/contexts/hook.yml:

    something_first:
        class: Tests\Behat\Context\Hook\Something
        arguments: ["first"]
        tags:
            - { name: fob.context_service }

    something_second:
        class: Tests\Behat\Context\Hook\Something
        arguments: ["second"]
        tags:
            - { name: fob.context_service }

3.) Now hook them up within the contexts_services:

- something_first
- something_second

4.) Now when I run my tests I can only see output for the something_second service ("Does things for: second")

[pamil]

Can you check if it applies only to contexts used as hooks or also to regular contexts (one context class with a step defined that's printing an injected string)?

I'm not sure if I understand the question? It applies to any context service that is tagged with fob.context_service and then used within the contexts_services option