Comment 0 for bug 1720364

Steps to reproduce:
1. Install ubuntu-mate-desktop on Ubuntu 17.10.
2. Set-up two keyboard layouts - English and Russian
3. Set <Ctrl+Shift> as keyboard layout switcher
4. Try to use shortcuts starting from <Ctrl+Shift>:
4.1. Open Firefox, open new tab, go to some site in it, close tab, try to click <Ctrl+Shift+T> to restore closed tab.
4.2. Open mate-terminal, try to open new tab with <Ctrl+Shift+T>, or copy (<Ctrl+Shift+C>), or paste (<Ctrl+Shift+C>).
4.3. Open pluma, write some text, try to navigate in it with <Ctrl+Shift+arrow>.

Expected results:
<Ctrl+Shift> switches keyboard layout, shortcuts starting from <Ctrl+Shift+> work normally.

Actual results:
<Ctrl+Shift> switches keyboard layout, shortcuts starting from <Ctrl+Shift+> do not work.

1. Ubuntu 16.04 LTS with Marco and Compton work normally with <Ctrl+Shift> keyboard layout switcher.
2. This problem was discovered before on 13.10, 14.04 and other modern versions with GNOME desktop (Metacity and Compiz) - see bug 1245473.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: marco 1.18.1-3ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic i686
ApportVersion: 2.20.7-0ubuntu1
Architecture: i386
CurrentDesktop: MATE
Date: Fri Sep 29 16:18:02 2017
InstallationDate: Installed on 2017-08-26 (33 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha i386 (20170826)
SourcePackage: marco
UpgradeStatus: No upgrade log present (probably fresh install)