unable to scroll smoothly in eclipse-luna(ubuntu-12.04)

Question

I have eclipse luna in my system.Scrolling function using touchpad is not working smoothly in the editor-view alone(it works properly in other views i.e project explorer,outline etc..).I am using ubuntu-12.04.

Thanks in advance.

Answer 1

Switch Eclipse theme to other than GTK (I tried 'Classic' theme on Eclipse Neon and I can observe the smooth scrolling)

Answer 2

I have found temporary solution by forcing Eclipse (4.6) to use GTK2. I've edited file 'eclipse.ini' so the first lines looks like:
-startup plugins/org.eclipse.equinox.launcher_1.3.200.v20160318-1642.jar --launcher.library plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.400.v20160518-1444 --launcher.GTK_version 2