setCookie not working any more

[javrok]

Hi, I just discovered that the problem is happening only in Firefox. Here are two exact tests with scripting, setting a cookie to remove the cookie bar (on the top of the screenshot):

- Chrome https://www.webpagetest.org/result/170426_C6_Z75/
- Firefox https://www.webpagetest.org/result/170426_CQ_Z4V/
You can see the setCookie worked on Chrome but not on Firefox.

I see something different, though, if I use the API (npm), but it also fails. I think this functionality needs to be reviewed with the update.

Thanks