Removing a user doesn't refresh display

[nsauzede]

Describe the bug When removing a user from graphical tool, the user removal works, but graphically we don't see it unless quitting/re-running the tool Worst, in some case the application even crash (see below)

To Reproduce First, must have at least two users. (obviously)

1. Launch Users tool
2. Unlock it (enter password)
3. Click on (eg: second) user to delete
4. Delete it, eg: with delete all files
5. Nothing happens graphically (yet, the user is deleted !) - first issue
6. Click on Date & Time
7. Click on Users again
8. It crashes ! (windows disappear) - second issue
9. Re-run Users tool : we can see the (second) user is deleted

Expected behavior Deleting (succesfully) a user should work (not crash) and be immediately visible : IE: hte "User view" should be automatically refreshed to select eg: the first remaining user

Environment (please complete the following information):

• Clear Linux OS version: [cat /usr/lib/os-release]

  NAME="Clear Linux OS" VERSION=1 ID=clear-linux-os ID_LIKE=clear-linux-os VERSION_ID=28100 PRETTY_NAME="Clear Linux OS" ANSI_COLOR="1;35" HOME_URL="https://clearlinux.org" SUPPORT_URL="https://clearlinux.org" BUG_REPORT_URL="mailto:dev@lists.clearlinux.org" PRIVACY_POLICY_URL="http://www.intel.com/privacy"

• Bundles: [e.g. sudo swupd bundle-list] NetworkManager acpica-unix2 alsa-utils baobab bootloader cheese clr-installer curl desktop desktop-apps desktop-assets desktop-autostart desktop-gnomelibs desktop-locales diffutils dosfstools editors emacs eog ethtool evince evolution file file-roller findutils firefox flatpak fonts-basic fuse fwupdate gedit git glibc-locale gnome-base-libs gnome-calculator gnome-characters gnome-color-manager gnome-disk-utility gnome-font-viewer gnome-logs gnome-music gnome-photos gnome-screenshot gnome-system-monitor gnome-todo gnome-weather graphviz gvim gzip htop iproute2 iptables irssi joe kbd kernel-install kernel-native less libX11client libglib libstdcpp libva-utils locales nautilus network-basic nfs-utils openldap openssh-server openssl os-core os-core-update os-core-webproxy p11-kit parallel patch perl-basic pmdk polkit powertop pygobject python3-basic samba seahorse smartmontools storage-utils strace sudo sysadmin-basic telemetrics thermal_daemon tmux totem tzdata unzip vim weechat which wpa_supplicant x11-server xemacs xfsprogs xz znc zstd

Additional context Running in VirtualBox Using native CLR kernel

[mrkz]

a gdb backtrace when reproducing this issue shows the following:

(gdb) bt
#0  0x00007f3cd1b2dd37 in _g_utf8_normalize_wc (str=0x0, max_len=max_len@entry=-1, mode=mode@entry=G_NORMALIZE_DEFAULT_COMPOSE)
    at ../glib/gunidecomp.c:372
#1  0x00007f3cd1b2e3d1 in g_utf8_normalize (str=<optimized out>, len=len@entry=-1, mode=mode@entry=G_NORMALIZE_DEFAULT_COMPOSE)
    at ../glib/gunidecomp.c:533
#2  0x000055bc8e6da44a in extract_initials_from_name (name=0x0) at ../panels/user-accounts/user-utils.c:572
#3  0x000055bc8e6da44a in generate_user_picture (size=80, name=0x0) at ../panels/user-accounts/user-utils.c:651
#4  0x000055bc8e6da44a in generate_default_avatar (user=user@entry=0x55bc90f9f100, size=size@entry=80) at ../panels/user-accounts/user-utils.c:730
#5  0x000055bc8e6db842 in cc_avatar_chooser_set_user (self=0x7f3cb808a1f0, user=user@entry=0x55bc90f9f100)
    at ../panels/user-accounts/cc-avatar-chooser.c:617
#6  0x000055bc8e6c5602 in show_user (self=0x55bc914a5720, user=0x55bc90f9f100) at ../panels/user-accounts/cc-user-panel.c:814
#7  0x000055bc8e6c5602 in set_selected_user (self=0x55bc914a5720, item=<optimized out>) at ../panels/user-accounts/cc-user-panel.c:188
#11 0x00007f3cd1c4ee73 in <emit signal ??? on instance ???>
    (instance=instance@entry=0x55bc914e2a80, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3447
    #8  0x00007f3cd1c44dbf in g_closure_invoke
    (closure=0x55bc911c50d0, return_value=0x0, n_param_values=2, param_values=0x7ffdbad25780, invocation_hint=0x7ffdbad25700)
    at ../gobject/gclosure.c:810
    #9  0x00007f3cd1c5e3a9 in signal_emit_unlocked_R
    (node=node@entry=0x55bc91655790, detail=detail@entry=0, instance=instance@entry=0x55bc914e2a80, emission_return=emission_return@entry=0x0, insta
nce_and_params=instance_and_params@entry=0x7ffdbad25780) at ../gobject/gsignal.c:3635
    #10 0x00007f3cd1c5fff4 in g_signal_emit_valist
    (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffdbad25940)
    at ../gobject/gsignal.c:3391
#12 0x000055bc8e6dc1b5 in cc_carousel_select_item (self=0x55bc914e2a80, item=item@entry=0x55bc8feadc10)
    at ../panels/user-accounts/cc-carousel.c:222
#13 0x000055bc8e6dc25c in on_item_toggled (item=item@entry=0x55bc8feadc10, event=<optimized out>, user_data=0x55bc914e2a80)
    at ../panels/user-accounts/cc-carousel.c:195
#18 0x00007f3cd1c4ee73 in <emit signal ??? on instance ???>
    (instance=instance@entry=0x55bc8feadc10, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3447
    #14 0x00007f3cd13a74f5 in _gtk_marshal_BOOLEAN__BOXED
    (closure=0x55bc914d2920, return_value=0x7ffdbad25c20, n_param_values=<optimized out>, param_values=0x7ffdbad25c80, invocation_hint=<optimized ou
t>, marshal_data=<optimized out>) at gtkmarshalers.c:83
    #15 0x00007f3cd1c44dbf in g_closure_invoke
    (closure=0x55bc914d2920, return_value=0x7ffdbad25c20, n_param_values=2, param_values=0x7ffdbad25c80, invocation_hint=0x7ffdbad25c00)
    at ../gobject/gclosure.c:810
    #16 0x00007f3cd1c5e3a9 in signal_emit_unlocked_R
    (node=node@entry=0x55bc8f7f5760, detail=detail@entry=0, instance=instance@entry=0x55bc8feadc10, emission_return=emission_return@entry=0x7ffdbad2
5d90, instance_and_params=instance_and_params@entry=0x7ffdbad25c80) at ../gobject/gsignal.c:3635
    #17 0x00007f3cd1c5f931 in g_signal_emit_valist
    (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffdbad25e40)
    at ../gobject/gsignal.c:3401
#19 0x00007f3cd13ec7d3 in gtk_widget_event_internal.part.0.lto_priv.0 (widget=widget@entry=0x55bc8feadc10, event=event@entry=0x55bc908dfc90)
    at gtkwidget.c:7789
#20 0x00007f3cd13ee8e9 in gtk_widget_event_internal (event=<optimized out>, widget=<optimized out>) at gtkwidget.c:7636
#21 0x00007f3cd13ee8e9 in gtk_widget_event (widget=0x55bc8feadc10, event=0x55bc908dfc90) at gtkwidget.c:7359
#22 0x00007f3cd15af578 in propagate_event_up (topmost=<optimized out>, event=<optimized out>, widget=0x55bc8feadc10) at gtkmain.c:2582
#23 0x00007f3cd15af578 in propagate_event (widget=<optimized out>, event=0x55bc908dfc90, captured=<optimized out>, topmost=0x0) at gtkmain.c:2685
--Type <RET> for more, q to quit, c to continue without paging--
#24 0x00007f3cd15b665b in gtk_main_do_event (event=0x55bc908dfc90) at gtkmain.c:1915
#25 0x00007f3cd15b665b in gtk_main_do_event (event=<optimized out>) at gtkmain.c:1685
#26 0x00007f3cd1297de9 in _gdk_event_emit (event=0x55bc908dfc90) at gdkevents.c:73
#27 0x00007f3cd1257663 in _gdk_event_emit (event=0x55bc908dfc90) at gdkdnd.c:738
#28 0x00007f3cd1257663 in gdk_event_source_dispatch (source=source@entry=0x55bc8f7e10c0, callback=<optimized out>, user_data=<optimized out>)
    at gdkeventsource.c:367
#29 0x00007f3cd1b6a435 in g_main_dispatch (context=0x55bc8f7e11b0) at ../glib/gmain.c:3189
#30 0x00007f3cd1b6a435 in g_main_context_dispatch (context=0x55bc8f7e11b0) at ../glib/gmain.c:3854
#31 0x00007f3cd1b6ac90 in g_main_context_iterate.isra.0.lto_priv.0
    (context=0x55bc8f7e11b0, block=<optimized out>, dispatch=<optimized out>, self=<optimized out>) at ../glib/gmain.c:3927
#32 0x00007f3cd1b6de2f in g_main_context_iteration (context=context@entry=0x55bc8f7e11b0, may_block=may_block@entry=1) at ../glib/gthread.c:1003
#33 0x00007f3cd1d7ddfd in g_application_run (application=0x55bc8fe0d5c0, argc=<optimized out>, argv=<optimized out>) at ../gio/gapplication.c:2516
#34 0x000055bc8e63a5e0 in main (argc=<optimized out>, argv=<optimized out>) at ../shell/main.c:70