Thank you for reporting this bug to Ubuntu. Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => Won't Fix ** Changed in: ubuntu-themes (Ubuntu) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1718932 Title: Child windows do not have shadows in Gnome Shell Status in Ubuntu UX: New Status in gnome-shell package in Ubuntu: Won't Fix Status in ubuntu-themes package in Ubuntu: Won't Fix Bug description: Some child windows do not have shadows. Test case: Open Thunderbird for the first time. A child window will appear to create a new account. It does not have shadows. Synaptic package manager also have the same issue. See screenshot. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: light-themes 16.10+17.10.20170918-0ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1 Uname: Linux 4.13.0-11-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Sep 22 14:20:26 2017 InstallationDate: Installed on 2017-09-21 (1 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170919) PackageArchitecture: all SourcePackage: ubuntu-themes UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-ux/+bug/1718932/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp