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why are cookies cleared mid-session

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Using Firefox Focus, site cookies are suddenly lost, even when just navigating to another page on the site. I have not seen this behavior prior to updating to latest version.

I have set to NOT block cookies (although would like to, 3rd party...) I do not clear the session or close any tab.

Sample site: wunderground.com I use the menu/settings to view in C°, after sometime it reverts to F°... I have also seen this behaviour in other sites where I log in, and later find myself logged out :/

Using Firefox Focus, site cookies are suddenly lost, even when just navigating to another page on the site. I have not seen this behavior prior to updating to latest version. I have set to NOT block cookies (although would like to, 3rd party...) I do not clear the session or close any tab. Sample site: wunderground.com I use the menu/settings to view in C°, after sometime it reverts to F°... I have also seen this behaviour in other sites where I log in, and later find myself logged out :/

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I would like to add more similar behavior that I've just seen:

After using FF Focus, switching to another app, and back after a few minutes, all my tabs turned to "about:blank", and lost all their individual history. Pressing back then closed each one.

Again, this happened without me actively clearing the session, and Firefox is marked "locked" among the running Android apps (I have always had it marked this way).

Appreciate any help you can give...