System theme messed up for no apparent reason

[Leon]

Was browsing the web when all of a sudden all icons changed and system theme now looks like a blast from the past.

Specifically:
- "Home" icon on the desktop
- Trash, disk icons on the app drawer
- Icons and buttons on the "Restart required" msgbox, and its topbar icon (next to wifi)
- Folder icons in Files (nautilus) window

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: nautilus 1:45~beta2-1ubuntu1
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: Thu Aug 31 02:32:02 2023
GsettingsChanges: b'org.gnome.nautilus.preferences' b'migrated-gtk-settings' b'true'
InstallationDate: Installed on 2023-08-26 (5 days ago)
InstallationMedia: Ubuntu 23.10 "Mantic Minotaur" - Daily amd64 (20230825)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_nautilus: nautilus-extension-gnome-terminal 3.49.92-2ubuntu1

[Sebastien Bacher (seb128)]

Thanks for the bug report, could you try if a reboot restore a normal appearance?

[Daniel van Vugt (vanvugt)]

This is unfortunately a common problem when GTK theme updates get installed. yaru-theme was updated last night so that's probably what triggered this.