@andrasvetoprivate I found out that this is caused by the Ubuntu Dock extension. However, this extension builds default settings into another existing extension called "Dash to Dock" I recommend installing Dash to Dock instead and customizing the settings to match that of Ubuntu Dock. That has resolved my screen locking issues with Ubuntu Dock.
To install: 1. Go to your Software center 2. Click on the search bar and type in "dash to dock" 3. Click install 4. Click Extension Settings and play around with them. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803807 Title: Lock screen doesn't hide the screen contents To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1803807/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs