I think not displaying the amount of data being transferred is intentional. In any case, that's a request that should be directed at the upstream bug tracker at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox.
** Changed in: firefox (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1859365 Title: Display "Downloading xx/xxKB" on the right bottom of Firefox. Status in firefox package in Ubuntu: Invalid Bug description: 1) Ubuntu 19.10 2) Firefox 71 3) When a webpage loads, "Transferring data from mozilla.org..." is displayed on the left bottom of Firefox. Could you display "Downloading xx/xxKB" on the right bottom of Firefox? 4) Message was not displayed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1859365/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp