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I have always in private mode enabled. Why is there a small web cache stored each time I open firefox?

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Basically I have Never Remember History enabled, and each time I open FF there's data in 'Cookies and Site Data'. Under 'Cookies and Site Data' it will say there's a bit of data (in the photo is says 16Kb, which is pretty typical). If I look under 'manage cookies and site data' there will be nothing there. Sometimes the cookies or cache or whatever is bigger if the last time I used that profile I was watching videos, at most it will be a couple Mb's maybe. If I wipe it out, it will go to 0Kb, and then for the rest of the profile session, even if I have a bazillion tabs open, it will say 0, but then there's always a cache there the next time I start that profile.

What is it? Why is there always a small amount of data in the 'Cookies and Site Data' section each time I restart a profile?

I'm currently running version 68.2.0esr on Debian Linux version 5.3.0-1-amd64. Extension: uBlock Origin 1.23.0

                 uMatrix 1.4.0
                 Canvasblocker 0.5.14.

Plugins: OpenH264 Video Codec provided by Cisco Systems, Inc. (disabled) Version 1.8.1.1

              Widevine Content Decryption Module provided by Google Inc. Version 4.10.1440.19

I have web history turned off ('Never Remember History'), trackers blocked, cookies enabled w/ third party disabled, auto search engine update turned on, Do Not Track enabled, 'Delete cookies and site data when Firefox is closed' enabled by default (b/c history is off). I might have changed a few tiny things in about:config but nothing I remember offhand. Any other system info I can look up in need be.

Basically I have Never Remember History enabled, and each time I open FF there's data in 'Cookies and Site Data'. Under 'Cookies and Site Data' it will say there's a bit of data (in the photo is says 16Kb, which is pretty typical). If I look under 'manage cookies and site data' there will be nothing there. Sometimes the cookies or cache or whatever is bigger if the last time I used that profile I was watching videos, at most it will be a couple Mb's maybe. If I wipe it out, it will go to 0Kb, and then for the rest of the profile session, even if I have a bazillion tabs open, it will say 0, but then there's always a cache there the next time I start that profile. What is it? Why is there always a small amount of data in the 'Cookies and Site Data' section each time I restart a profile? I'm currently running version 68.2.0esr on Debian Linux version 5.3.0-1-amd64. Extension: uBlock Origin 1.23.0 uMatrix 1.4.0 Canvasblocker 0.5.14. Plugins: OpenH264 Video Codec provided by Cisco Systems, Inc. (disabled) Version 1.8.1.1 Widevine Content Decryption Module provided by Google Inc. Version 4.10.1440.19 I have web history turned off ('Never Remember History'), trackers blocked, cookies enabled w/ third party disabled, auto search engine update turned on, Do Not Track enabled, 'Delete cookies and site data when Firefox is closed' enabled by default (b/c history is off). I might have changed a few tiny things in about:config but nothing I remember offhand. Any other system info I can look up in need be.

Détails additionnels sur le système

Plugins installés

OpenH264 Video Codec provided by Cisco Systems, Inc. (disabled) Version 1.8.1.1 Widevine Content Decryption Module provided by Google Inc. Version 4.10.1440.19

Application

  • Agent utilisateur : Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0

Plus d’informations

Andrew
  • Moderator
322 solutions 4071 réponses

Your question posting duplicated. Future responses will be at https://support.mozilla.org/questions/1272979

Your question posting duplicated. Future responses will be at https://support.mozilla.org/questions/1272979

Modifié le par Andrew