C-h k
Select menu "Options", "Show/hide", "Scroll-bar", "On the Right"
The scroll bar is actually moved on the right!
And the help buffer displays:
----- <menu-bar> <options> <showhide> <showhide-scroll-bar> <left>
runs the command menu-bar-left-scroll-bar
which is an interactive compiled Lisp function in `menu-bar.el'.
It is bound to <menu-bar> <options> <showhide> <showhide-scroll-bar>
<left>.
(menu-bar-left-scroll-bar)
Display scroll bars on the left of each window.
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Do others observe that?