System tray icon for Updates appears with red X when software is already up to date

[Daniel Barrett]

*After* I do a software update from the command line:

$ sudo apt-get upgrade

a new icon appears in my system tray, which looks like a shield with a red "X" on it. (See screenshot.) To my eye, the red X means that my software is out of date. However, my software is up to date.

This behavior seems backwards. Shouldn't the icon appear *before* the update, and then disappear after the update?

When I click the icon, a rectangle appears that says "Updates: System up to date." There appears to be no way to make this icon disappear, short of hiding it permanently.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: muon-updater 4:5.4.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Nov 17 07:43:49 2015
InstallationDate: Installed on 2013-08-31 (807 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
SourcePackage: muon
UpgradeStatus: Upgraded to wily on 2015-11-08 (8 days ago)

[Launchpad Janitor (janitor)]

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