We have mixpanel setup on two different websites. The user generally go to our marketing site via an adsource and from there clicks to go to our main site which is a different domain. I have noticed that when the user navigates from the marketing site to the main site and hits the back button to come back to the marketing site, the mixpanel cookie value changes. The cookie key is of the form:
mp_xxxxxxx_mixpanel - where xxxxxxx is a random string.
When we see the dev tools the value of the cookie above changes.
We feel this is causing duplicate leads to be generated messing up the numbers in our reports