There are TONS of hidden plugins/addons in all versions of FF.
I’ve deleted them all now, but they’re in C:\Program Files\Mozilla Firefox\browser\features
From memory there is a screenshots app, pocket and at least 3 more. Delete all the .xpi files in there - they are totally unnecessary and are of major privacy concern!!
If that wasnt enough, there are tons more, from amazon, bing, google and others to be found.
To find them all - install ccleaner and in it, theres a tool for finding all of your hidden browser pugins… in cccleaner go to ‘tools’ then ‘browser plugins’ and then ‘firefox’ - it has options for FF, IE and Opera.
Open that up then you will see TONS of stuff inclucing in FF that you had NO IDEA was there!!
Delete or disable EVERYTHING - NONE of it is necessary for any form of browsing - I’ve deleted it all and had zero negative effects.
Also type in about:config type safebrowsing and disable ALL hits - safebrowsing is google safe search built in to FF - it constantly sends data to GOOGLE from your FIREFOX
Also type ‘google’ into about:config and delete everything, all references and all links.
Congratulations - you finally got rid of 1% of the TRACKING and PRIVACY INVADING stuff HIDDEN in FIREFOX