It's not even per-window. If you open an Incognito window and log into a website, any other Incognito windows will share that same cookie jar and thus also be l

It's not even per-window. If you open an Incognito window and log into a website, any other Incognito windows will share that same cookie jar and thus also be logged in to said website. I would love a way to keep them distinct, but simply opening a new window won't do it--you have to close all Incognito windows/tabs to clear its temporary cookie jar.