Example video of the Launcher being visible on top of the Lock screen:
https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1805014/+attachment/5216139/+files/Launcher%20visible%20on%20Lock%20screen.ogv
Example video of the Launcher being visible on top of the Lock screen:
https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-screensav er/+bug/ 1805014/ +attachment/ 5216139/ +files/ Launcher% 20visible% 20on%20Lock% 20screen. ogv