Titlebar buttons missing in Ubuntu Desktop window

[corrado venturini]

Settings - Ubuntu Desktop window - Titlebar buttons missing
See attached screenshot

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: gnome-control-center 1:45~rc-1ubuntu2
ProcVersionSignature: Ubuntu 6.3.0-7.7-generic 6.3.5
Uname: Linux 6.3.0-7-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 1 16:46:24 2023
InstallationDate: Installed on 2023-08-29 (3 days ago)
InstallationMedia: Ubuntu 23.10 "Mantic Minotaur" - Daily amd64 (20230829)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)