"Sorry something didn't work, snap not installed" when a snap package is removed

[Jean-Baptiste Lallement]

gnome-software 3.26.1-0ubuntu1~ppa1

Test Case:
1. Install a snap
2. Remove it

Expected result
The snap is removed and nothing else

Actual result
After the removal there is a message "Sorry something didn't work, snap is not installed" which is true because it has been intentionally removed but useless. This is not only reproducible.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-software 3.26.0-0ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 9 10:23:38 2017
InstallationDate: Installed on 2013-09-03 (1496 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902)
InstalledPlugins:
 gnome-software-plugin-flatpak N/A
 gnome-software-plugin-limba N/A
 gnome-software-plugin-snap 3.26.0-0ubuntu3
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

That's still an issue, not a big deal but gives a lack of polish feeling :-/

[Merlijn Sebrechts (merlijn-sebrechts)]

This is what I did to reproduce the bug:

1. Open gnome software, search for rocketchat, install the desktop app.
2. close gnome software
3. open gnome software, search for rocketchat, remove the desktop app.

What happens: The snap gets removed correctly but you get the error "sorry something went wrong, snap not installed".