URL is not active after creation

Steps

• Make sure you have a website

• Add a page to the website (for example on URL /test.html) and click save

• Go to the url (/test.html)

• --> result: 404

• Clear the cache

• --> result: OK

Affected versions

• It seems Symfony version 2.7.25 and the newest 2.8 have this problem

Requirements

• The URL should work without a (manual) cache clear

• In all supported Symfony versions