I think there might be a race condition involved here, i.e., I think this behavior only happens if you start typing your password at the "wrong time" while the computer is in the process of waking up from sleep.
Note that if you click the Cancel button and then try unlocking your screen again, the password is properly masked. I've unlocked my screen many times after waking my computer from sleep, but I've only seen this happen once. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/1791512 Title: The lock screen text box didn't mask the password I typed Status in gnome-screensaver package in Ubuntu: Confirmed Bug description: My laptop was charging, I left it for like an hour so the screen lock kicked in. When I tried to unlock it, I found that my typed password was not masked !! I expect it to be masked of course. I erased what I typed and typed other random characters so I can take a picture and share it safely. $ lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 $ apt-cache policy gnome-screensaver gnome-screensaver: Installed: 3.6.1-8ubuntu3 Candidate: 3.6.1-8ubuntu3 Version table: *** 3.6.1-8ubuntu3 500 500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-screensaver 3.6.1-8ubuntu3 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sun Sep 9 15:02:32 2018 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-xenial-amd64-20160624-2 InstallationDate: Installed on 2018-07-04 (66 days ago) InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47 SourcePackage: gnome-screensaver Symptom: security Title: Screen locking issue UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1791512/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

