Sticky keys accessibility feature breaks after pressing control key twice

[Sami Sieranoja]

Sticky keys accessibility feature breaks after pressing control key twice

Steps to reproduce:
1. Open gnome-control-center
2. Navigate to Accessibility => Typing
3. Enable "Sticky keys"
4. Open text editor
5. Press control key twice

Result:
The system stops accepting some key presses, e.g. pressing letter key "a" repeatedly has no effect.

Workaround:
Disable and re-enable sticky keys.

Ubuntu 24.04, X11

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-control-center 1:46.0.1-1ubuntu7
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
NonfreeKernelModules: lkp_Ubuntu_6_8_0_31_31_generic_104 nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Jun 8 00:41:22 2024
InstallationDate: Installed on 2021-01-01 (1254 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to noble on 2024-06-02 (6 days ago)

[Sami Sieranoja (sjs-a)]

On second thoughts, this might be a feature, to keep control key locked. It seems that pressing control key twice again gets one back to normal state. But the bug is that this feature is not documented in the help page and I didn't find instructions for this anywhere. And the same thing doesn't work with alt key in case of alt-tab, so it's not consistent for all modifiers. Some visual feedback for the state change would also be nice. Its very confusing when one activates this by accident.