Symfony version(s) affected

6.0.5

Description

In a project with Symfony 6.0.3, after upgrading to 6.0.5 I got this error while executing tests (I found that, in general, the problem arises as soon as the container is retrieved):

LogicException: Could not find service "test.service_container". Try updating the "framework.test" config to "true".

/myproj/vendor/symfony/framework-bundle/Test/KernelTestCase.php:98
/myproj/vendor/symfony/framework-bundle/Test/MailerAssertionsTrait.php:121
/myproj/vendor/symfony/framework-bundle/Test/MailerAssertionsTrait.php:25
/myproj/tests/Controller/DefaultControllerTest.php:136

Caused by
Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: The "kernel" service is synthetic, it needs to be set at boot time before it can be used.

If I execute bin/console deb:conf framework I can see that the test configuration is actually set to true
If I execute bin/console de:cont --parameter=kernel.environment I get (as expected) "test".

The only way I found so far to get it working again is adding this to my composer.json:

"conflict": {
        "symfony/framework-bundle": "6.0.5"
    },

How to reproduce

I cannot reproduce the problem on a fresh installation.

Possible Solution

Commenting out $container->reset() in https://github.com/symfony/framework-bundle/blob/6.0/KernelBrowser.php#L155 solves the problem.

Additional Context

No response