Different than default keyboard layout can't be used in login screen of Ubuntu 17.04

[stan383]

I upgraded from Ubuntu 16.04 to 16.10 and immediately from 16.10 to 17.04. I had and also have SK and US keyboard layouts defined.
I noticed after boot in the login screen, for entering the password, only the keyboard layout defined in /etc/default/keyboard, works (in my case it is US). When I select different layout via indicator (I select SK keyboard layout), only the one defined in the /etc/default/keyboard (US layout) is used.
Once I am logged in and use Ctrl+Alt+L for locking the screen, then all layouts works. So the problem is only after boot and I noticed the problem is also when switching to not logged other user.

Steps for reproducing:

1. Have installed Ubuntu 16.04 LTS and define SK and US layout via "Text entry"
2. Upgrade from Ubuntu 16.04 LTS to 16.10 and immediately upgrade from 16.10 to 17.04
3. Reboot your PC and notice only one keyboard layout works in the login screen (the layout which is defined in /etc/default/keyboard)

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: lightdm 1.22.0-0ubuntu2
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Fri Apr 14 21:47:51 2017
InstallationDate: Installed on 2015-10-05 (557 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: lightdm
UpgradeStatus: Upgraded to zesty on 2017-04-14 (0 days ago)

[Launchpad Janitor (janitor)]

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

[Mattias (mt410)]

I have the same problem with a clean installation of Ubuntu 17.04 (No upgrade)
When I boot I get login screen and can only use one keyboard layout (US), when I change to another installed keyboard layout (BE) it still uses US layout for the login screen.
One I am logged in I can use both keyboard layouts (US, BE), when I lock the screen and have the login view again I can also use both keyboard layouts (US, BE)

[dino99 (9d9)]

That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml