bug#25165: 26.0.50; Point becomes sticky after clone-indirect-buffer

[Eli Zaretskii]

> From: npostavs@users.sourceforge.net
> Date: Sun, 11 Dec 2016 08:11:47 -0500
> Cc: 25165@debbugs.gnu.org
> 
> > emacs -Q
> > Make sure buffer *scratch* is the current buffer.
> > M-x clone-indirect-buffer
> > Move point with C-n, C-f and other commands in the cloned buffer (and
> > also the original *scratch* buffer.)
> >
> > See the stickyness of point.
> 
> Huh, that's weird.  It seems impossible to move point more than 2 steps
> backwards.

More accurately, something resets point back to its position in the
other buffer.  Even if you move point just one position with C-b.

This is caused by something in the concurrency merge, but I have no
idea by what or how.