Screen not locked when coming out of suspend/hibernate

[Cristobal Diaz Aircury]

After switching to KDE and selecting again Gnome it doesn't ask me to introduce the password after resuming from suspension.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-screensaver (not installed)
ProcVersionSignature: Ubuntu 5.15.0-72.79~20.04.1-generic 5.15.98
Uname: Linux 5.15.0-72-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.26
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon May 29 11:10:24 2023
InstallationDate: Installed on 2022-05-04 (389 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen not locked when coming out of suspend/hibernate
UpgradeStatus: No upgrade log present (probably fresh install)