I have a laptop running the latest Ubuntu, with regularly installed updates. I have several desktop environments installed alongside Unity, including KODI, FluxBox, and Unity 8 preview. Shortly before updating to 16.10 from 16.04, I installed KDE, and this is where my problems started.
Some desktop elements do not display correctly, I.E. newly launched windows appear behind the launcher instead of beside it. Also, there are two active sets of mouse pointers, and Ubuntu switches between them randomly.