[Bug 1716120] [NEW] Unable to sort package list in Muon by "Installed Size", "Installed Version", "Available Version" (as in Synaptic)

[Norbert]

Public bug reported:

Steps to reproduce:
1. Install Muon on Ubuntu Zesty or Artful.
2. Enable columns "Installed Size", "Installed Version", "Available Version" by right click
3. Click on any column of "Installed Size", "Installed Version", "Available Version" to sort by it.

Expected results:
List gets sorted by corresponding field.

Actual results:
List does not sort by corresponding field.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: muon 4:5.7.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-32.36-generic 4.10.17
Uname: Linux 4.10.0-32-generic i686
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: i386
CurrentDesktop: GNOME
Date: Sat Sep  9 15:19:21 2017
SourcePackage: muon
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: muon (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug artful zesty

** Description changed:

  Steps to reproduce:
- 1. Install Muon on Ubuntu Zesty.
+ 1. Install Muon on Ubuntu Zesty or Artful.
  2. Enable columns "Installed Size", "Installed Version", "Available Version" by right click
  3. Click on any column of "Installed Size", "Installed Version", "Available Version" to sort by it.
  
  Expected results:
  List gets sorted by corresponding field.
  
  Actual results:
  List does not sort by corresponding field.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: muon 4:5.7.0-0ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-32.36-generic 4.10.17
  Uname: Linux 4.10.0-32-generic i686
  ApportVersion: 2.20.4-0ubuntu4.5
  Architecture: i386
  CurrentDesktop: GNOME
  Date: Sat Sep  9 15:19:21 2017
  SourcePackage: muon
  UpgradeStatus: No upgrade log present (probably fresh install)

** Tags added: artful

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https://bugs.launchpad.net/bugs/1716120

Title:
  Unable to sort package list in Muon by "Installed Size", "Installed
  Version", "Available Version" (as in Synaptic)

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