I've been able to keep using compiz, using Emerald as the window decorator and applying an old, never-merged patch that restores proper transparency function for CSD windows. https://code.launchpad.net/~albertsmuktupavels/compiz/add-gtk-frame-extents-to-net-supported Ubuntu patches GTK instead to get compiz to work with CSD windows Their CSD results are said noty to be not as good as mine, but their system has the advantage that when tiling is used and the theme does not expliclty set tiles windows to zero margins and zero shadows they still line up with no gaps. If neither compiz nor GTK is patched, the result is black corners on CSD windows and the inabilty of any CSD window to be transparent unless the code calling the window expliclity enable it: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1436553 The "fix released" appears to be the GTK patches, not a fix in compiz by Ubuntu. I offer the compiz builds I use in Debian at https://archive.org/details/DebianPackagesForMate-desktopWityGtk3AndCustomPanelTheme I do get a couple timing issues on startup. To get compiz to fully start and connect to the window decorator at session startup I have to use a script, and if the timing is exactly wrong mate-panel has to be restarted. Compiz itself orignally restarted gnome-panel in session startups I recall. Anyway, I've got it mostly working, with a little attention to that timing issue and the extents patch, a better build than mine for Debian should be possible. On 10/21/2016 at 10:01 AM, "Cyril Brulebois"