http://us63bgjkxwpyrpvsqom6kw3jcy2yujbplkhtzt64yykt42ne2ms7p4yd.onion/graves/news/2019-03-27-firefox_lockbox.html
Mozilla receives information about your interaction with Firefox Lockbox, including (1) frequency of editing, viewing, copying, and syncing credentials, (2) whether you are a new or existing Firefox Account user, (3) interactions with Firefox Lockbox menus and icons, (4) length of time the app is in background. AKA tracking literally everything you do on the app. No different than the well-known trackers such as Google and Facebook which Mozilla proudly speaks against.