Symfony changed the UrlGeneratorInterface in Symfony 2.8. It looks like eZ assums `UrlGeneratorInterface::ABSOLUTE_URL` equates to true, but in Symfony 2.8 it equates to `0`.

I can trace the breaking change to this commit on Symfony: https://github.com/symfony/symfony/commit/912fc4de8fd6de1e5397be4a94d39091423e5188