It looks like after switching to the HighContrast theme in Appearance, 'Adwaita' is being set as the icon theme in dconf. We think it's not Adwaita that should be used, but rather the HighContrast icon theme.
You can use the unity-tweak-tool to change the icon theme to highcontrast and notice that the situation is much better. After a reboot (and after enabling the highcontrast icon theme with unity-tweak- tool) I get almost all the icons in high contrast. I think if we could just use the high contrast icon theme when clicking the high contrast theme in appearance, it'd be much better already. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1644662 Title: Icons missing when appearance setting is "high contrast" Status in unity-control-center package in Ubuntu: Confirmed 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/unity-control-center/+bug/1644662/+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