It's not exactly the same, but first-party isolation [1] sounds like it would be pretty similar. [1] https://www.ghacks.net/2017/11/22/how-to-enable-first-part

It's not exactly the same, but first-party isolation [1] sounds like it would be pretty similar. [1] https://www.ghacks.net/2017/11/22/how-to-enable-first-party-isolation-in-firefox/ https://www.ghacks.net/2017/11/22/how-to-enable-first-party-...