When doing an A/B split test in a funnel, visitors are cookied to always get one variant served. The problem is that after a split test is done, one variant is deleted, and all visitors that were cookied to visit the losing variant gets a 404 page instead.

I have talked to support about this but the communication just stopped. #3050879

This means that a lot of my paid traffic is going to a 404 page and there is little I can do about this. It seems like a serious bug and I am surprised nobody have noticed this before.

-Visiting the funnel URL with incognito mode gives expected results and loads the page.

-Visiting the funnel URL with a cookied browser gives a 404, if the cookie points to the URL of the losing page variant.