landscape is constantly asking for reboot and no /var/run/reboot-required file

The landscape web interface is constantly asking for a reboot of the machine, but even when it has a scheduled reboot, it does not clear the instruction. The landscape system is in contact with the machine and can install/upgrade software.

A scheduled reboot does reboot the machine, but the reboot required is still active. A screenshot of the web interface is attached.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: landscape-client 16.03-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Fri Feb 10 10:19:16 2017
InstallationDate: Installed on 2016-11-22 (79 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
ProcEnviron:
 TERM=xterm-256color
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:
SourcePackage: landscape-client
UpgradeStatus: No upgrade log present (probably fresh install)