Downgrading just libgtk2.0-0 to 2.16.1-0ubuntu3 is enough to solve the problem, so, looks like as this could indeed be some change in the client side code.
** Changed in: gtk+2.0 (Ubuntu) Status: Incomplete => Confirmed -- Conky background uses gtk_color_scheme's window background color, at random https://bugs.launchpad.net/bugs/405340 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs