After upgrade to Kubuntu 23.10 info page displays "Ubuntu 12" as below. Does anyone know what happened? It should display Kubuntu logo and "Kubuntu 23.10" title. What even is "Ubuntu 12"?

$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 23.10 Release: 23.10 Codename: mantic
deb http://pl.archive.ubuntu.com/ubuntu/ mantic main restricted deb http://pl.archive.ubuntu.com/ubuntu/ mantic-updates main restricted deb http://pl.archive.ubuntu.com/ubuntu/ mantic universe deb http://pl.archive.ubuntu.com/ubuntu/ mantic-updates universe deb http://pl.archive.ubuntu.com/ubuntu/ mantic multiverse deb http://pl.archive.ubuntu.com/ubuntu/ mantic-updates multiverse deb http://pl.archive.ubuntu.com/ubuntu/ mantic-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu mantic-security main restricted deb http://security.ubuntu.com/ubuntu mantic-security universe deb http://security.ubuntu.com/ubuntu mantic-security multiverse
deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu kinetic stable deb [arch=amd64] https://dl.google.com/linux/chrome/deb/ stable main deb [arch=amd64 signed-by=/usr/share/keyrings/signal-desktop-keyring.gpg] https://updates.signal.org/desktop/apt xenial main
[General] LogoPath=/usr/share/kubuntu-default-settings/kubuntu-circle-128.png Website=https://www.kubuntu.org Name=Kubuntu
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