KDE user-manager does not show all users

[linex83]

Running Kubuntu 17.04, I logged in, opened the start menu, typed "user" and opened the "User Manager". There I created the user "overlord", set the password, chose a user picture and marked the user as an administrator. The following /etc/passwd entry was created:

overlord:x:1001:1001:overlord:/home/overlord:/bin/bash

Now when I open the User Manager, my new user overlord is not shown. He has also the wrong picture, not the one that I've chosen when I created the user.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: user-manager 4:5.9.4-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15
Uname: Linux 4.10.0-22-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.1
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Jun 10 10:10:54 2017
InstallationDate: Installed on 2017-06-04 (5 days ago)
InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: user-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.