bug#14567: These changes sometimes break plain text navigation

[Eli Zaretskii]

> From: Dima Kogan <dima@secretsauce.net>
> Date: Sat, 06 Jul 2013 14:51:07 -0700
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Please try the latest trunk and see if the problem with that font and
> > global-hl-line-mode is solved.
> 
> I applied this patch:
> 
>  
> http://git.savannah.gnu.org/cgit/emacs.git/diff/?id=daec5594cd21e30469f2a489875a89c8e931bee9
> 
> and tried again. It's better, but not 100% fixed yet. The previous
> behavior of sticking until scrolling was no longer possible is now
> replaced with sticking for a few presses of C-n. As before, turning off
> global-hl-line-mode fixes it. Let me know what I can do to help debug.

Don't you see the same in Emacs 24.3?  If so, the changes that were
done to allow smoother scrolling of tall images are no longer
responsible.