I also confirm I tested the new gnome-themes-standard and gnome- accessibility-themes packages from -proposed in artful and xenial and it fixes the issue with the missing icons.
xenial: gnome-themes-standard | 3.18.0-2ubuntu2 gnome-accessibility-themes | 3.18.0-2ubuntu2 artful: gnome-themes-standard | 3.22.3-1ubuntu2 gnome-accessibility-themes | 3.22.3-1ubuntu2 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-themes-standard in Ubuntu. https://bugs.launchpad.net/bugs/1644662 Title: Icons missing when appearance setting is "high contrast" Status in gnome-themes-standard package in Ubuntu: Fix Released Status in gnome-themes-standard source package in Xenial: Fix Committed Status in gnome-themes-standard source package in Artful: Fix Committed Bug description: [Impact] * Switching to HighContrast theme in System Settings/Appearance results in missing icons for some of the panels in System Settings. * Only Xenial is affected of the currently supported releases. * Current development release is not affected. [Test Case] * Open System Settings, select Appearance. * Choose the "High Contrast" theme. * Go back by selecting "All Settings". Expected result: there are icons to all items in the Settings window. Actual result: some items are missing icons. [Regression Potential] * There might be different icons used in some places depending on the fact that for Xenial HighContrast used Adwaita themes. Possibly icons may be missing in different places. [Other Info] * For some reason Trusty was using HighContrast icons and the change was made somewhere in between Trusty - Xenial. * Original bug description: To reproduce this: Open System Settings. Click Appearance Theme: High Contrast. Click All Settings tab: Many icons are missing. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: unity-control-center 15.04.0+16.04.20160705-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24 Uname: Linux 4.4.0-47-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Thu Nov 24 14:45:30 2016 ExecutablePath: /usr/bin/unity-control-center InstallationDate: Installed on 2015-06-06 (537 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcEnviron: PATH=(custom, user) SHELL=/bin/bash LANG=en_CA.UTF-8 LANGUAGE=en_CA:en XDG_RUNTIME_DIR=<set> SourcePackage: unity-control-center UpgradeStatus: Upgraded to xenial on 2016-08-28 (88 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-themes-standard/+bug/1644662/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp