In your address bar if you type the following chrome://settings/content/cookies this will take you directly to the cookies settings. There is an option for Enable Auto Clear. Toggling this will cause cookies and site data to clear when you close all windows. Have you verified this is not enabled?
i dont see it leads me directly to some cookie settings, it just redirects me here:

i get these options in danish tho, translated to:
sync. and google options
administrate your google account
adjust your chrome profile
and import bookmarks and settings
This post was edited by StoreFarmand on Jan 5 2026 09:01am