The latest release of Linux Mint (Version 19 – Tara) uses the Mint-Y theme. Unfortunately this provides a thin scroll bar in LibreOffice Writer, does not display the single line up/down controls, and offers, to my mind, a rather strange method for navigating through the text.
Notably, left-clicking above or below the present location of the scroll bar jumps to the approximate region of the text associated with the position selected on the scroll bar. For example, clicking about one quarter of the way down the scroll bar shifts the display to about one quarter of the way down the document. Now, this may be fine for some users, but I prefer the more usual scroll bar actions where left-clicking results in moving one line or one page forward or backward in the text.
Previously (see Vertical Scroll Bars in Linux Mint 17) I have achieved this by installing mate-themes and selecting Traditional Green as the theme of choice. This basic method also works in Tara. Having downloaded mate-themes, I navigated to System Settings – Appearance – Themes – Controls and selected Traditional Green. This restores the usual set of scroll bars in Writer and makes my life much easier!
Vertical Scroll Bars in Linux Mint 17