I’m not sure exactly when but possibly the last Firefox update I am now having to log into every website that I just looked at, if I navigate away for Firefox and do something else on my iPad even for a minute when I go back to Firefox I have to log into all my websites again. Also i have found that firefox is a bit hit and miss at saving passwords, either the ‘save password’ box does not pop up when I need to save a new website or it just simply hasn’t remembered old passwords. I’m so fed up with it on my iPad that ironically I’m using safari to reach out on here. I don't have the same issues on my iPhone.