idle3 not displayed in Gnome Software

[CrazySky]

Some packages with GUI not displayed in Gnome Software.

For example IDLE3.

If I write idle3 in search field there are no results.

But if I use apt search idle3 results available.

idle3/yakkety,yakkety 3.5.1-4 all
  IDE для Python

1) 16.10
2) 3.20.1+git20161013.0.d77d6cf-0ubuntu2
3) Gnome software displayed correct results of search
4) There are no results after search

Test Case:

Open Gnome Software and search 'idle3'. Also 'apt search idle3'

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: gnome-software 3.20.1+git20161013.0.d77d6cf-0ubuntu2
ProcVersionSignature: Ubuntu 4.8.0-32.34-generic 4.8.11
Uname: Linux 4.8.0-32-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jan 9 09:13:21 2017
ExecutablePath: /usr/bin/gnome-software
InstallationDate: Installed on 2016-12-11 (28 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
ProcEnviron:
 LANGUAGE=ru
 PATH=(custom, user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)

[Matthias Klose (doko)]

idle built from Python2 is gone

[Matthias Klose (doko)]

no idea why this is an issue in python3.