Screen not locked when coming out of suspend/hibernate - Dock bar is visible

[Michael Chong]

Came back to my computer, screen was locked but application menu (dock?) was still visible. Could start and quit applications, access and select options from the right click menu on the dock. Could see running applications, and view previews of running applications that had multiple windows open.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-screensaver (not installed)
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
Uname: Linux 4.15.0-44-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 6 12:19:48 2019
InstallationDate: Installed on 2018-10-09 (120 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen not locked when coming out of suspend/hibernate
UpgradeStatus: No upgrade log present (probably fresh install)