bug#74496: 30.0.91; fullscreen frame set with F11 is shifted when ctwm restarts

[Van Ly via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

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Hello,

When the ctwm window manager is restarted, the emacs fullscreen frame,
set with `F11' key, shifts up by approximately 50 pixels and shows the
desktop background.  The right edge of the frame shifts a little to the
left.  Expect the fullscreen frame to remain unchanged.

To demonstrate,

 1. start, `emacs -Q'
 2. enlarge frame to fullscreen, `F11'
 3. call, `Restart CTWM' from window manager menu on X
 4. see the fullscreen frame bottom edge is shifted up 50 pixels approximately

 X. expect to see no change to fullscreen frame when ctwm restarts
    for comparison, a fullscreen xterm frame remains unchanged when ctwm restarts

=> http://sdf.org/~van.ly/img/emacs-fullscreen-frame-0.webp .
=> http://sdf.org/~van.ly/img/emacs-fullscreen-frame-1-shifts-up.webp .

=> http://mail-index.netbsd.org/netbsd-users/2024/11/23/msg031998.html discussion about shifted fullscreen frame behavior


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From: xxx@xxx.mail-host-address-is-not-set
To: bug-gnu-emacs@gnu.org
Subject: 30.0.91; x
X-Debbugs-Cc: 
--text follows this line--




In GNU Emacs 30.0.91 (build 2, x86_64--netbsd, X toolkit, cairo version
 1.18.0) of 2024-09-27 built on xxx
Windowing system distributor 'The X.Org Foundation', version 11.0.12101014
System Description: NetBSD xxx 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #1: Thu Nov  7 15:18:42 AEDT 2024  xxx@xxx:/u/o/n10/amd64/sys/arch/amd64/compile/GENERIC amd64

Configured using:
 'configure --srcdir=/u/xxx/src/emacs/30.0.91 --localstatedir=/var
 --disable-autodepend --with-native-compilation --without-ns --with-rsvg
 --without-imagemagick --without-xaw3d --without-toolkit-scroll-bars
 --x-includes=/usr/X11R7/include --x-libraries=/usr/X11R7/lib
 --with-x-toolkit=lu --prefix=/usr/local --build=x86_64--netbsd
 --host=x86_64--netbsd --infodir=/usr/pkg/info --mandir=/usr/pkg/man
 --enable-option-checking=yes 'CFLAGS=-O2 -I/usr/pkg/include/cairo
 -I/usr/pkg/include -I/usr/include -I/usr/pkg/include/freetype2
 -I/usr/pkg/include/glib-2.0 -I/usr/pkg/include/gio-unix-2.0
 -I/usr/pkg/lib/glib-2.0/include -I/usr/X11R7/include
 -I/usr/pkg/include/harfbuzz -I/usr/X11R7/include/libdrm'
 'CPPFLAGS=-DTERMINFO -I/usr/pkg/include -I/usr/include
 -I/usr/pkg/include/freetype2 -I/usr/pkg/include/glib-2.0
 -I/usr/pkg/include/gio-unix-2.0 -I/usr/pkg/lib/glib-2.0/include
 -I/usr/X11R7/include -I/usr/pkg/include/harfbuzz
 -I/usr/X11R7/include/libdrm' 'LDFLAGS=-Wl,-R/usr/pkg/gcc13/lib
 -Wl,-zrelro -L/usr/pkg/lib -lcairo -L/usr/lib -Wl,-R/usr/lib
 -Wl,-R/usr/pkg/lib -L/usr/X11R7/lib -Wl,-R/usr/X11R7/lib
 -Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lgnutls''

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GNUTLS GSETTINGS HARFBUZZ JPEG LCMS2
LIBOTF LIBXML2 MODULES NATIVE_COMP NOTIFY KQUEUE PDUMPER PNG RSVG SOUND
SQLITE3 THREADS TIFF TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM LUCID
ZLIB

Important settings:
  value of $LC_COLLATE: en_AU.UTF-8
  value of $LC_CTYPE: en_AU.UTF-8
  value of $LC_MESSAGES: en_AU.UTF-8
  value of $LC_MONETARY: en_AU.UTF-8
  value of $LC_NUMERIC: en_AU.UTF-8
  value of $LC_TIME: en_AU.UTF-8
  value of $LANG: en_AU.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-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
  minibuffer-regexp-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date subr-x mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils rmc iso-transl tooltip cconv eldoc paren electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/x-win x-win term/common-win x-dnd touch-screen tool-bar dnd fontset
image regexp-opt fringe tabulated-list replace newcomment text-mode
lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch
easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine 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
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind kqueue lcms2
dynamic-setting system-font-setting font-render-setting cairo x-toolkit
xinput2 x multi-tty move-toolbar make-network-process native-compile
emacs)

Memory information:
((conses 16 49491 9439) (symbols 48 5360 0) (strings 32 14355 2416)
 (string-bytes 1 402093) (vectors 16 8999)
 (vector-slots 8 125392 10454) (floats 8 24 2) (intervals 56 330 0)
 (buffers 992 10))

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-- 
vl