16.04 Xenial scrollbars

I have seen many posts about overlay scrollbars in Xenial, but none answered the question I have.

No matter what setting for scrollbars I choose in the Unity tweak or dconf-editor, I have a thin narrow line instead of a scrollbar in applications such as Terminal or Nautilus. It widens when I point the mouse pointer at the window border.

In other applications, such as Emacs, with the default scrolling settings, the scrollbar line is thin and very short (typically, I work with large documents), this makes it even harder to see. When set to the legacy setting, this thin narrow line disappears altogether in Emacs, and I caot even see where I am within the document; this makes navigation through the document unbearable - I must click somewhere on the window edge to see the scrollbar, which takes me away from the paragraph I am editing. On the other hand, in firefox the scrollbar is reasonably wide and does not change its width.

Is there any way to have usable scrollbars for all applications which are wide, visible and have constant width? I hardly remember a single user who welcomed this latest `scrollbar iovation'. I don't believe this caot be changed - Even 14.04 overlay scrollbars were more usable and it was easy to switch to the classic scrollbars if the users did not like them.

If that matters, I use Gnome-flashback (Metacity), but the problem persists even when I switch to Unity. I use the Radiance theme.

Any help is greatly appreciated.