Settings app crashed when changing Appearance from Dark back to Default

[fdimeglio]

Steps to repro:

1) update from Lunar a week ago to Lunar as of this bug time/date

2) go to Settings / Appearance and change from Default to Dark

3) change from Dark back to Default

4) Settings app crashes

ProblemType: Crash
DistroRelease: Ubuntu 23.04
Package: gnome-control-center 1:44.0-1ubuntu4
Uname: Linux 6.2.0-18-generic x86_64
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 3 15:41:32 2023
ExecutablePath: /usr/bin/gnome-control-center
ExecutableTimestamp: 1680135635
ProcCmdline: /usr/bin/gnome-control-center background
ProcCwd: /home/fdimeglio
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
Signal: 11
SourcePackage: gnome-control-center
UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 GTK_IS_PICTURE (ptr=0x800020a) at ../../../gtk/gtkpicture.h:37
 gtk_picture_set_filename (self=0x800020a, filename=0x55b8973356f0 "/usr/share/pixmaps/ubuntu-logo-text.png") at ../../../gtk/gtkpicture.c:718
 g_closure_invoke (closure=0x55b89ca3ae00, return_value=0x0, n_param_values=2, param_values=0x7ffd4a13e1b0, invocation_hint=0x7ffd4a13e130) at ../../../gobject/gclosure.c:832
 signal_emit_unlocked_R.isra.0 (node=node@entry=0x55b89835f0a0, detail=detail@entry=879, instance=instance@entry=0x55b89854c210, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7ffd4a13e1b0) at ../../../gobject/gsignal.c:3802
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffd4a13e370) at ../../../gobject/gsignal.c:3555

[Apport retracing service (apport)]

StacktraceTop:
 GTK_IS_PICTURE (ptr=0x800020a) at ../../../gtk/gtkpicture.h:37
 gtk_picture_set_filename (self=0x800020a, filename=0x55b8973356f0 "/usr/share/pixmaps/ubuntu-logo-text.png") at ../../../gtk/gtkpicture.c:718
 g_closure_invoke (closure=0x55b89ca3ae00, return_value=0x0, n_param_values=2, param_values=0x7ffd4a13e1b0, invocation_hint=0x7ffd4a13e130) at ../../../gobject/gclosure.c:832
 signal_emit_unlocked_R.isra.0 (node=<optimized out>, detail=879, instance=0x55b89854c210, emission_return=0x0, instance_and_params=0x7ffd4a13e1b0) at ../../../gobject/gsignal.c:3818
 g_signal_handlers_destroy (instance=0x7ffd4a13e360) at ../../../gobject/gsignal.c:2831

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

Corresponding error, https://errors.ubuntu.com/problem/ccfbfe4a928f30dada1857c1c8e2e942993d9c68