The 2nd most important addon after unlock origin is Multi-Account-Containers: https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/ https://

The 2nd most important addon after unlock origin is Multi-Account-Containers: https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/ https://addons.mozilla.org/en-US/firefox/addon/multi-account... This would enable proper isolation between browsing contexts, and therefore make progressive web apps truly usable and a good alternative to native apps. Currently PWAs leak cookies to the browser, therefore you cannot login on the PWA while browsing "anonymously" in the browser.