Keyboard layout custom shortcut key not working

[Bogdan Harjoc]

In the Text Entry Settings control panel applet, the default shortcut key for switching to next source (Alt-Ctrl-Shift) works. Changing it to Ctrl-Esc works as well in ubuntu-14.04 but not in ubuntu-16.04.

So:
Ctrl-Alt-Shift works in both versions
Ctrl-Shift works in both versions
Ctrl-Esc works only in 14.04
Ctrl-F12 works only in 14.04
Alt-Esc works only in 14.04

I am trying to switch from EN to HU. I am using a standard DELL keyboard.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity-control-center 15.04.0+16.04.20160413-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Aug 9 11:52:22 2016
ExecutablePath: /usr/bin/unity-control-center
InstallationDate: Installed on 2016-06-13 (56 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: unity-control-center
UpgradeStatus: No upgrade log present (probably fresh install)