Another “feature” that I can’t live with in Ubuntu 12.04 LTS is the use of overlay scrollbars in the windows of many applications. But, a simple “gsettings” command will fix this issue!
In Ubuntu Version 10.04 (Lucid Lynx), the previous long-term support version, the trick was to remove several “liboverlay” files and hence disable the overlay scrollbars (see: Removing overlay scrollbars).
However, no such liboverlay files are used in the current LTS version, which leads us to seek a different solution.
Fortunately, as with the previous posting, a simple “gsettings” command eliminates the overlay feature and provides an interface using regular scrollbars. To disable the overlay scrollbars, issue the Terminal command:
gsettings set org.gnome.desktop.interface ubuntu-overlay-scrollbars false
Disable Ubuntu Overlay Scrollbars in Ubuntu 12.04 (Precise Pangolin)
Removing overlay scrollbars