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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1644662 Title: Icons missing when appearance setting is "high contrast" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-themes-standard/+bug/1644662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs