launcher is available on locked screen

[Marco Tanner]

The launcher bar is accessible to me even though the screen is locked. I was able to take a screenshot via right-clicking the Shutter icon and selecting 'Capture the entire screen'. See attachment. I'm able to launch new applications via launcher and close open ones. (New windows aren't shown, but are open after unlocking).

Re-locking yields the same situation again. I have yet to reboot to see if the problem persists.

The expectation is that the launcher bar is not available whilst the screen is locked.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gdm3 3.28.3-0ubuntu18.04.3
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 28 10:05:38 2019
InstallationDate: Installed on 2018-04-20 (282 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180420)
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)