UI problems at System Settings (User accounts) with Guest account

[Giuliano Tognarelli Buono-core]

Ubuntu 14.04 Fresh install of daily build + updates.

First problem
Steps to reproduce:
1. Login with a guest account
2. Navigate to the System Settings
3. Choose User Accounts
4. Click on the Unlock button
Actual result:
1. Nothing happens

Second problem:
Steps to reproduce
1. Login with a guest account
2. Navigate to the System Settings
3. Choose User Accounts
4. Click on the '+' button to add a new account
5. Select an account type, fill the display name field and select or set an username
6. Click the Add button
Actual result:
1. Nothing happens
2. No error is shown

Third problem
Steps to reproduce:
1. Follow the steps 1 to 3 from the Second problem.
2. Click the '-' button
Actual result:
1. Nothing happens
2. No error is shown

Fourth problem
Steps to reproduce:
1. Login with a guest account
2. Navigate to the System Settings
3. Choose User Accounts
4. Click any user shown in the UI
Actual result:
1. The '+' and the '-' button locks as they should be
2. The Unlock button still does nothing

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-control-center 14.04.3+14.04.20140410-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 12 20:40:00 2014
ExecutablePath: /usr/bin/unity-control-center
InstallationDate: Installed on 2014-04-23 (19 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: unity-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_unity-control-center:
 activity-log-manager 0.9.7-0ubuntu14
 deja-dup 30.0-0ubuntu4

[Gunnar Hjalmarsson (gunnarhj)]

Hi Giuliano,

Thanks for your report. Considering the nature of the guest session feature, the behavior you describe isn't very surprising, is it?

https://help.ubuntu.com/14.04/ubuntu-help/shell-guest-session.html

Of course, you could argue that since the User Accounts capplet cannot be used by the guest user, it should be hidden. OTOH, one guest session use case is to show prospective Ubuntu users what Ubuntu is about, and that speaks for keeping the UI as is even if some tasks cannot be accomplished (for good reasons).

What would you consider expected behavior be in the cases you mention?

[Giuliano Tognarelli Buono-core (giuliano150-8)]

Well, an expected behavior could be asking for an administrator user name and password to make changes and lock the '+' and '-' buttons by default.

[Gunnar Hjalmarsson (gunnarhj)]

Guess that would make some kind of sense. Personally, though, I think it would defeat the idea with the guest session feature and open up for security issues. Leaving to Sebastien to decide.