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Firefox logs me out from sites

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Hi, After the latest update, I experienced unusual Firefox behavior. When I turn off PC Firefox signs me out from all sites and when I open them it also requires me to accept cookies again (on any site, even when I visited it in the previous session). I thought that the update accidentally turned on the option to delete cookies after closing Firefox, but I still have this option unchecked in settings. I can also still se all my previous cookies in settings. Passwords are also still saved in Firefox password manager. The PC is new (3 months) so I don't expect it to have memory problems.

Should I go back to the older version of Firefox? Any help will be appreciated. Thanks

System: Windows 11 Pro 25H2, Firefox 146.0 (20251205151434), I don't use any Add-ons

Hi, After the latest update, I experienced unusual Firefox behavior. When I turn off PC Firefox signs me out from all sites and when I open them it also requires me to accept cookies again (on any site, even when I visited it in the previous session). I thought that the update accidentally turned on the option to delete cookies after closing Firefox, but I still have this option unchecked in settings. I can also still se all my previous cookies in settings. Passwords are also still saved in Firefox password manager. The PC is new (3 months) so I don't expect it to have memory problems. Should I go back to the older version of Firefox? Any help will be appreciated. Thanks System: Windows 11 Pro 25H2, Firefox 146.0 (20251205151434), I don't use any Add-ons

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