The problem for shared cookies is likely third party cookies, which are going away [1]. [1] https://blog.mozilla.org/blog/2019/09/03/todays-firefox-blocks-thir

The problem for shared cookies is likely third party cookies, which are going away [1]. [1] https://blog.mozilla.org/blog/2019/09/03/todays-firefox-blocks-third-party-tracking-cookies-and-cryptomining-by-default/ https://blog.mozilla.org/blog/2019/09/03/todays-firefox-bloc...