Thanks a million @Jarosław Rafa (raj001): Although interestingly indicator-applet-appmenu was not active in my panel, uninstalling indicator-appmenu via package manager and logging out and back in solved the problem for me.
This is with Ubuntu 20.04 with mate. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/1863282 Title: libreoffice menu bar disappeared Status in libreoffice package in Ubuntu: Confirmed Bug description: Last kde neon 18.04 update Libreoffice menu bar disappeared. Uninstall libreoffice-kde & libreoffice-kde4 resolve problem, but need to install libreoffice-gtk3. KDE neon User Edition 5.18 18.04 libreoffice-kde 1:6.0.7-0ubuntu0.18.04.10 libreoffice-kde4 1:6.0.7-0ubuntu0.18.04.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1863282/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

