Every & then, this problem is filed over mozilla support, it's contributors just straight up archive the issue. Please don't do such nonsense.

On firefox v44, ability to ask to save cookies for each every website was being removed. And it's defaulted to save cookies permanently. I could change it to delete after current session. But the issue is, I have to keep track of all savable cookies manually, which is a hor$s$shit task. If anyone know how to do this on latest firefox, please lemme know.