With every release of Ubuntu, one of the first things I do is getting rid of these space-saving scroll-bars called overlay-scrollbars that only appear when you hover over a window's edge. I want the traditional old-skool always visible scrollbars back!
On older releases of Ubuntu, you could adjust a setting in gsettings to toggle between using them and not (gsettings set org.gnome.desktop.interface ubuntu-overlay-scrollbars false). In 14.04, that setting (org.gnome.desktop.interface) is gone. And the easiest, quickest way to get rid of them is to do this:
sudo apt-get remove liboverlay-scrollbar
After removing the package, all GTK based apps will throw a warning on CLI about overlay-scrollbars not being found or similar. But I noticed that this fades away after reboot.