Public bug reported:

Test Case
=======
From Ubuntu Desktop 26.04 LTS
Ideally, you'd have a HD display (1920x1080 or higher)
Open the GNOME Settings app.
Switch to the Displays tab and set Scale to 200%. Click Apply then Keep 
Settings.
Close the GNOME Settings app.
Run GDK_BACKEND=x11 gnome-text-editor

gnome-text-editor should be scaled the same way as your other apps.

Other Info
==========
This is a regression triggered by systemd 259~rc1 (currently in 
resolute-proposed). I also still experience this bug with systemd 259~rc2-1. At 
least one Fedora Rawhide user also reported this issue after systemd 259~rc2 
was pushed there (they had been using systemd 258 before).

See attached Debian bug and https://gitlab.gnome.org/GNOME/gnome-
shell/-/issues/8866

I'm setting the block-proposed tag because my assumption is we don't
want to unknowingly introduce a regression. However, I understand if
it's necessary to land systemd 259 sooner and figure out the xwayland
scaling issue later.

ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: systemd 259~rc1-1ubuntu1
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 30 12:09:29 2025
InstallationDate: Installed on 2024-04-12 (597 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Beta amd64 (20240410.2)
MachineType: HP HP ProBook 440 G7
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-6-generic 
root=UUID=7a431ed1-30e4-4377-bb6e-1f81480f31ba ro quiet splash 
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M 
vt.handoff=7
SourcePackage: systemd
SystemdFailedUnits:
 Error: command ['systemctl', 'status', '--full', '●'] failed with exit code 4: 
Invalid unit name "●" escaped as "\xe2\x97\x8f" (maybe you should use 
systemd-escape?).
 Unit \xe2\x97\x8f.service could not be found.
UpgradeStatus: Upgraded to resolute on 2025-10-20 (41 days ago)
dmi.bios.date: 12/30/2022
dmi.bios.release: 16.0
dmi.bios.vendor: HP
dmi.bios.version: S71 Ver. 01.16.00
dmi.board.name: 869D
dmi.board.vendor: HP
dmi.board.version: KBC Version 02.3B.00
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 2.59
dmi.modalias: 
dmi:bvnHP:bvrS71Ver.01.16.00:bd12/30/2022:br16.0:efr2.59:svnHP:pnHPProBook440G7:pvr:rvnHP:rn869D:rvrKBCVersion02.3B.00:cvnHP:ct10:cvr:sku210W4UC#ABA:
dmi.product.family: 103C_5336AN HP ProBook
dmi.product.name: HP ProBook 440 G7
dmi.product.sku: 210W4UC#ABA
dmi.sys.vendor: HP
modified.conffile..etc.systemd.logind.conf: [modified]
mtime.conffile..etc.systemd.logind.conf: 2025-11-30T12:02:11.341965

** Affects: systemd (Ubuntu)
     Importance: High
         Status: Confirmed

** Affects: systemd (Debian)
     Importance: Unknown
         Status: Unknown


** Tags: amd64 apport-bug block-proposed package-from-proposed resolute 
wayland-session

** Bug watch added: Debian Bug tracker #1121628
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1121628

** Also affects: systemd (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1121628
   Importance: Unknown
       Status: Unknown

** Changed in: systemd (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/2133462

Title:
  systemd 259 breaks xwayland scaling for GNOME

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