Thank your for your comment.
On Sun, Jul 17, 2016 at 11:07 PM, Eli Zaretskii <address@hidden
> This is not a bug, but the intended behavior: Emacs lays out lines
> according to what is actually shown. When you scroll the window
> horizontally by typing C-e, the lines became less tall, because the
> Japanese characters are not shown.
That's what I observe.
Is there an option to get the old behavior back?
If not, would you accept such option, say for 25.2?
I'm not oppose to the change but I'm sure this affects many multilingual
writers. A vibrating line while typing isn't a good experience.