[Bug 1888940] [NEW] RShift + LShift works together with LAlt + LShift to switch language layout

[Norbert]

Public bug reported:

Steps to reproduce:
1. Have default Ubuntu 20.04 LTS installed
2. Configure two keyboard layouts - English and Russian
3. Configure <LeftAlt>+<LeftShift> as keyboard layout switcher in GNOME Tweaks
4. Press and hold <RightShift>, then do multiple click on <LeftShift>

Expected results:
* nothing, keyboard layout does not change

Actual results:
* keyboard layout changes as when <LeftAlt>+<LeftShift> was clicked

---

Details:

```
$ cat /etc/default/keyboard ; gsettings get org.gnome.desktop.input-sources xkb-options ; gsettings get org.freedesktop.ibus.general.hotkey triggers
XKBLAYOUT=us,ru
XKBVARIANT=,
BACKSPACE=guess
['grp:lalt_lshift_toggle']
['<Super>space']
```

Note: first seen on https://askubuntu.com/q/1261935 .


---

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-settings-daemon 3.36.1-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Jul 25 16:57:06 2020
InstallationDate: Installed on 2020-04-27 (88 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: gnome-settings-daemon
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-settings-daemon (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: ubuntu-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal groovy

** Also affects: gnome-shell (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-meta (Ubuntu)
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-meta in Ubuntu.
https://bugs.launchpad.net/bugs/1888940

Title:
  RShift + LShift works together with LAlt + LShift to switch language
  layout

Status in gnome-settings-daemon package in Ubuntu:
  New
Status in gnome-shell package in Ubuntu:
  New
Status in ubuntu-meta package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Have default Ubuntu 20.04 LTS installed
  2. Configure two keyboard layouts - English and Russian
  3. Configure <LeftAlt>+<LeftShift> as keyboard layout switcher in GNOME Tweaks
  4. Press and hold <RightShift>, then do multiple click on <LeftShift>

  Expected results:
  * nothing, keyboard layout does not change

  Actual results:
  * keyboard layout changes as when <LeftAlt>+<LeftShift> was clicked

  ---

  Details:

  ```
  $ cat /etc/default/keyboard ; gsettings get org.gnome.desktop.input-sources xkb-options ; gsettings get org.freedesktop.ibus.general.hotkey triggers
  XKBLAYOUT=us,ru
  XKBVARIANT=,
  BACKSPACE=guess
  ['grp:lalt_lshift_toggle']
  ['<Super>space']
  ```

  Note: first seen on https://askubuntu.com/q/1261935 .


  ---

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gnome-settings-daemon 3.36.1-0ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jul 25 16:57:06 2020
  InstallationDate: Installed on 2020-04-27 (88 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: gnome-settings-daemon
  UpgradeStatus: No upgrade log present (probably fresh install)

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