I do have a decorator service over validator.validator_factory, as described in documentation. It is not working for now, because:

1. \Symfony\Component\DependencyInjection\Compiler\DecoratorServicePass is removing original service, renaming it to my_service_name.inner and set alias from my_service_name to validator.validator_factory.

2. After that \Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass is invoked, and tries to locate original service validator.validator_factory which can not be found anymore.

As a result, validator factory built with wrong dependencies.