This seems to be a package ordering issue/regression in apt or dpkg. While apparmor in focal is 2.13.3 and therefore sufficient to the needs of libreoffice, it would be easier to apply a mitigation to libreoffice in focal.
This seems to be a package ordering issue/regression in apt or dpkg. While apparmor in focal is 2.13.3 and therefore sufficient to the needs of libreoffice, it would be easier to apply a mitigation to libreoffice in focal.