MATE panel shadow is missing
In Ubuntu MATE 16.10 Beta 2, the shadows for the panels are missing entirely. No matter which compositor I use from the MATE Tweak tool, all I get are flat panels with no shadow. It was like this on a fresh install, both before I installed my Nvidia driver (the 340 version) and after.
I did try following the directions on the ArchWiki page below with Marco, but to no avail:
I'm not sure how to enable panel shadows with Compiz, especially since the necessary dependencies to install the Compiz Configuration tool are missing from the Ubuntu repository at the moment.