I had installed Privacy Badger and today I saw a suggestion with addons list, what contained “Privacy Badger”(https://addons.mozilla.org/en-US/firefox/addon/privacy-badger17/). When I have followed and installed it, and now I have a two version of one addon. The Latest update of new “legit” version is Jul 10, 2019 (v. 2019.7.1.1), the latest update of old version Jul 21, 2019 (v. 2019.7.1.1). Old version of Privacy Badger doesn’t have a page in addons.mozilla. I cannot be sure what it’s a malware, I could installed this addon from eff website, but I must notice you about it.
Unfortunately, I have removed the old addon and have only new version from addon.mozilla.
Error from debug mode: “Reading manifest: Error processing storage: An unexpected property was found in the WebExtension manifest.”
Internal - was diffrent from UUID21320813-f144-4e30-88ab-f573722507f6
Author was corrupt and didn’t have link to addons.mozilla, but contained @eff
Mozilla Firefox 68.0.2
For Arch Linux
archlinux - 1.0