This is due to XDG_CURRENT_DESKTOP now containing more than one value, i.e. it is "Unity:Unity7" when it used to be "Unity". u-c-c is still incorrectly doing a simple string comparison to check if it is running under Unity. Looks like this fix for this never got completed / applied (bug 1554878).
** Changed in: unity-control-center (Ubuntu) Status: Confirmed => Triaged ** Changed in: unity-control-center (Ubuntu) Importance: High => Critical -- 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/1629668 Title: [regression] Some Display settings have gone missing: Scale, Launcher placement Status in unity-control-center package in Ubuntu: Triaged Bug description: There appear to be other options missing as well. They should be under "General options" but there is nothing there. Ubuntu Yakkety Yak (development branch) ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: unity-control-center 15.04.0+16.10.20160705.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-17.19-generic 4.8.0-rc7 Uname: Linux 4.8.0-17-generic x86_64 ApportVersion: 2.20.3-0ubuntu7 Architecture: amd64 CurrentDesktop: Unity:Unity7 Date: Sun Oct 2 09:56:19 2016 ExecutablePath: /usr/bin/unity-control-center InstallationDate: Installed on 2016-09-29 (3 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160922) ProcEnviron: LANG=en_US.UTF-8 LANGUAGE=en_US PATH=(custom, user) SHELL=/bin/bash XDG_RUNTIME_DIR=<set> SourcePackage: unity-control-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-control-center/+bug/1629668/+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