Why does the Zest cookie banner come back every week in Safari? I set expiration to 365 days

[zapalblizh]

My expiration is 365 days and it works fine in Chrome, but on Safari (Mac and iPhone) visitors report the banner reappears roughly once a week. Is the consent record being lost, or is something capping it?

[reatlat]

Nothing is lost, it's Safari. Safari's Intelligent Tracking Prevention caps every cookie set from JavaScript at 7 days, no matter what expiry you ask for. Zest stores the consent choice in a first-party zest_consent cookie set via document.cookie, so on Safari your 365 days becomes 7. After that the cookie is gone and Zest correctly treats the visitor as undecided. Chrome, Firefox, and Edge keep the full expiry.

It's not a Zest thing, it hits every JS-set consent cookie from every CMP that stores state client-side.

If a week isn't enough for your compliance model, the fix is server-side: read zest_consent on your backend and re-issue the same cookie with a Set-Cookie header. Cookies set by the server aren't capped.

Details and the cookie's exact shape: https://cookiezest.com/docs/configuration/#how-long-consent-lasts