Indeed, the Ubuntu patch to enable global menu integration in Firefox was removed in 20.04 (see https://bazaar.launchpad.net/~mozillateam/firefox/firefox.focal/revision/1340).
Indeed, the Ubuntu patch to enable global menu integration in Firefox was removed in 20.04 (see https:/ /bazaar. launchpad. net/~mozillatea m/firefox/ firefox. focal/revision/ 1340).