Created attachment 271989 [details] emerge --info After updating xfce-base/xfdesktop 4.8.1 to 4.8.2, Xchat 2.8.8 refuses to enable transparent backgrounds with the following message: "Unable to set transparent background! You may be using a non-compliant window manager that is not currently supported." Going back to xfdesktop 4.8.1 "solves" the problem.
This was done on purpose by upstream regarding http://bugzilla.xfce.org/show_bug.cgi?id=7442 and http://git.xfce.org/xfce/xfdesktop/commit/?id=bf07cc01b5457067303bdfad93433def548b6172 So while annoying, 4.8.2 is actually intended to behave like this until the upstream commit gets replaced by another fix Also this is why we have no plans on stabilizing 4.8.2 until we absolutely have to, and we might have to when xorg-server-1.10 goes stable