Canonical has long been proposed to integrate PC, tablet and mobile devices, a desktop to adapt to different display sizes of hardware equipment, which is the Unity 8 desktop environment. Unity 8 after the birth of the road is not equally determined before in Ubuntu 16.04 lts as formal desktop environment, but as a desktop PC obviously and a lot of problems without processing. After the determination on 16.10 as a desktop environment, it now appears that the desktop environment is still not mature enough.
According to foreign related science and technology blog, and now the most ideal Unity 8 to fully mature, at least until the Ubuntu 18.04 LTS release. And two years, long enough. But do not worry, Ubuntu 16.10 should be set to Unity 8 as a session option, you are still in the use of Ubuntu 16.10, there may be various problems.