After a composer update which installed symfony 2.4.5 my behat acceptance tests are broken. I get below error message:

Warning: DOMXPath::query(): Invalid expression in /vendor/symfony/symfony/src/Symfony/Component/DomCrawler/Crawler.php on line 832

When I manually set symfony 2.4.4 version in composer.json and install symfony 2.4.4 everything works again.

I viewed some commits from v2.4.4 until v2.4.5 and saw there have been changes in the Symfony\Component\DomCrawler\Crawler. But I couldn't say what causes this break.

Does anyone else have this issue?