Public bug reported:

**Description:**

After upgrading system packages on Ubuntu 25.04, the window control
buttons (minimize, maximize, close) appear at inconsistent sizes across
different GTK applications.

For example:  
- In **Nautilus** and **GNOME Text Editor**, the window buttons are noticeably 
**smaller**.  
- In **GNOME Terminal**, the window buttons appear **larger**, as expected.

**Steps to Reproduce:**

1. Install Ubuntu using the `ubuntu-25.04-beta-desktop-amd64.iso`.  
2. Observe that window button sizes are consistent across GTK apps.  
3. Upgrade system packages using the default package manager (`sudo apt update 
&& sudo apt upgrade`).  
4. Restart and observe the change in window button sizes across different GTK 
applications.

**Expected Behavior:**

Window button sizes should remain consistent across all GTK apps, before
and after system updates.

**Actual Behavior:**

After the system upgrade, some apps (e.g., Nautilus, GNOME Text Editor)
display smaller window buttons, while others (e.g., GNOME Terminal)
retain larger buttons.

**Additional Info:**

- ISO used: `ubuntu-25.04-beta-desktop-amd64.iso`  
- This issue was not present in the clean installation, only after the upgrade. 
 
- Affects multiple core GNOME apps.

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: gnome-shell 48.0-1ubuntu1
ProcVersionSignature: Ubuntu 6.14.0-11.11-generic 6.14.0-rc7
Uname: Linux 6.14.0-11-generic x86_64
ApportVersion: 2.32.0-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 10 22:59:06 2025
DisplayManager: gdm3
InstallationDate: Installed on 2025-04-11 (0 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Beta amd64 (20250326.6)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions: mutter-common 48.1-1ubuntu3
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug plucky wayland-session

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https://bugs.launchpad.net/bugs/2106784

Title:
  Ubuntu 25.04 - Inconsistent Window Button Sizes Across GTK Apps

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  **Description:**

  After upgrading system packages on Ubuntu 25.04, the window control
  buttons (minimize, maximize, close) appear at inconsistent sizes
  across different GTK applications.

  For example:  
  - In **Nautilus** and **GNOME Text Editor**, the window buttons are 
noticeably **smaller**.  
  - In **GNOME Terminal**, the window buttons appear **larger**, as expected.

  **Steps to Reproduce:**

  1. Install Ubuntu using the `ubuntu-25.04-beta-desktop-amd64.iso`.  
  2. Observe that window button sizes are consistent across GTK apps.  
  3. Upgrade system packages using the default package manager (`sudo apt 
update && sudo apt upgrade`).  
  4. Restart and observe the change in window button sizes across different GTK 
applications.

  **Expected Behavior:**

  Window button sizes should remain consistent across all GTK apps,
  before and after system updates.

  **Actual Behavior:**

  After the system upgrade, some apps (e.g., Nautilus, GNOME Text
  Editor) display smaller window buttons, while others (e.g., GNOME
  Terminal) retain larger buttons.

  **Additional Info:**

  - ISO used: `ubuntu-25.04-beta-desktop-amd64.iso`  
  - This issue was not present in the clean installation, only after the 
upgrade.  
  - Affects multiple core GNOME apps.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: gnome-shell 48.0-1ubuntu1
  ProcVersionSignature: Ubuntu 6.14.0-11.11-generic 6.14.0-rc7
  Uname: Linux 6.14.0-11-generic x86_64
  ApportVersion: 2.32.0-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr 10 22:59:06 2025
  DisplayManager: gdm3
  InstallationDate: Installed on 2025-04-11 (0 days ago)
  InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Beta amd64 (20250326.6)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  RebootRequiredPkgs: Error: path contained symlinks.
  RelatedPackageVersions: mutter-common 48.1-1ubuntu3
  SourcePackage: gnome-shell
  UpgradeStatus: No upgrade log present (probably fresh install)

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