I have just updated Eclipse (using with PyDev) and surprisingly found out that the classic vertical scrollbar is changed to some strange thing as marked on the figure (scree
This is the Overview Ruler Minimap which is now the default with PyDev release 3.7.0
This is controlled by Preferences > PyDev > Editor > Overview Ruler Minimap
Go to Preferences > PyDev > Editor > Overview Ruler Minimap.
There is an option "Show vertical scrollbar?"
disable it :)