Thank you @Guillaume1024 for the detailed message!
Thank you all for reporting this and for the detailed discussion – it’s really helpful for us.
We’ve identified the situation across all supported browsers. A fix has already been released for Google Chrome and Microsoft Edge in the Norton AntiTrack extension v4.7.0.4542.
For Firefox, we’re working with Mozilla on a new extension build (v4.8.0). It will be rolled out to everyone as soon as it passes their review and approval process. Once published, the update should install automatically for you.
Thanks again for your patience and for helping us improve Norton AntiTrack.