bug#26083: 25.1; ASCII alphabet paragraph may be displayed on the right side

[ynyaaa]

Evaluating the form below, ABC is displayed on the right side of a window.

(let ((hebrew-string "\u05D0\u05D1\u05D2"))
  (switch-to-buffer (generate-new-buffer "tmp"))
  (insert hebrew-string "\n123ABC")
  ;; insert a linebreak between 123 and ABC
  (redisplay) (goto-char 8) (redisplay) (insert ?\n)
  ;; insert an empty line between hebrew-string and 123
  (goto-char 5) (insert ?\n)
  ;; delete "123" line
  (delete-region 6 10)
  ;; add empty line after ABC
  (goto-char (point-max))
  (insert "\n\n"))



In GNU Emacs 25.1.1 (i686-w64-mingw32)
 of 2016-09-18 built on LAPHROAIG
Windowing system distributor 'Microsoft Corp.', version 6.0.6002
Configured using:
 'configure --host=i686-w64-mingw32 --without-dbus
 --without-compress-install CFLAGS=-static'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS

Important settings:
  value of $LANG: JPN
  locale-coding-system: cp932

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:

Load-path shadows:
None found.

Features:
(shadow emacsbug network-stream nsm starttls tls gnutls mailalias
smtpmail auth-source cl-seq eieio byte-opt bytecomp byte-compile
cl-extra cconv eieio-core cl-macs gv sendmail mail-extr sort message
dired format-spec rfc822 mml mml-sec password-cache epg epg-config
gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mailabbrev mail-utils gmm-utils
mailheader tabify help-fns benchmark misearch multi-isearch debug
thingatpt help-mode easymenu cl-loaddefs pcase cl-lib time-date
mule-util japan-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp disp-table w32-win w32-vars
term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment elisp-mode lisp-mode prog-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese charscript case-table epa-hook jka-cmpr-hook help
simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
w32notify w32 multi-tty make-network-process emacs)

Memory information:
((conses 8 112294 19467)
 (symbols 32 21663 0)
 (miscs 32 129 703)
 (strings 16 21212 5122)
 (string-bytes 1 592881)
 (vectors 8 15357)
 (vector-slots 4 570351 7814)
 (floats 8 201 377)
 (intervals 28 1850 3920)
 (buffers 520 30))