fzy will auto insert blank line if a line has CJK character and the line length more than terminal width

[jack6th]

Tested with msys2 on Windows.
Reproduce:
Open a msys2 terminal on Windows.
Do not maximize or fullscreen it.
Set the terminal column to 80 (default value).
Input
perl -E '$a="a"x88;say "$a汉字"' | fzy
Now press Ctrl+n five times. The result is

$ perl -E '$a="a"x88;say "$a汉字"' | fzy
>
>
>
>
>
>
> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
汉字

It will mess the result screen if the input has many lines like this.