[tor-dev] Cookies to third parties?

Hi List, Thanks for this nice software. Using it for quite a while now, supporting it via exit-nodes and bridges. But now I came across one strange thing I would like to ask you. I have just tried the orbot/orweb v2 on Android (4.2), which works. But if you go to the website of the jondonyn-project, http://ip-check.info/ and do the test there, it says that third-parties may set cookies? Is this really true? (I even disabled cookies alltogether. But the test yields the same "problem") Is the test on the website wrong? Thanks Joost