Connection to nonexistant slot
This keeps appearing in my log files:
Jul 02 19:28:39 ryzen9 polkit-kde-authentication-agent-1[2164]: QObject::connect: No such slot AuthDialog::on_userCB_currentIndexChanged(int)
Jul 02 19:28:39 ryzen9 polkit-kde-authentication-agent-1[2164]: QObject::connect: (sender name: 'userCB')
Jul 02 19:28:39 ryzen9 polkit-kde-authentication-agent-1[2164]: QObject::connect: (receiver name: 'AuthDialog')
It is generated by https://invent.kde.org/plasma/polkit-kde-agent-1/-/blob/master/AuthDialog.cpp#L138 -- and grep shows on_userCB_currentIndexChanged is not actually defined anywhere.