Core was generated by `gnome-software'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0xb6f3c317 in gtk_list_box_row_grab_focus (widget=0xa538680)
    at gtklistbox.c:3490
3490	  if (BOX_PRIV (box)->cursor_row != row)
Missing separate debuginfos, [...]
(gdb) bt
#0  0xb6f3c317 in gtk_list_box_row_grab_focus (widget=0xa538680)
    at gtklistbox.c:3490
#1  0xb67fc68e in g_cclosure_marshal_VOID__VOIDv (closure=0x966a678, 
    return_value=0x0, instance=0xa538680, 
    args=0xbf8154cc "R\225\016\267\030U\201\277", 
    marshal_data=0xb6f3c2cf <gtk_list_box_row_grab_focus>, n_params=0, 
    param_types=0x0) at gmarshal.c:905
#2  0xb67fa3a5 in g_type_class_meta_marshalv (closure=0x966a678, 
    return_value=0x0, instance=0xa538680, 
    args=0xbf8154cc "R\225\016\267\030U\201\277", marshal_data=0xac, 
    n_params=0, param_types=0x0) at gclosure.c:988
#3  0xb67f9fc7 in _g_closure_invoke_va (closure=0x966a678, return_value=0x0, 
    instance=0xa538680, args=0xbf8154cc "R\225\016\267\030U\201\277", 
    n_params=0, param_types=0x0) at gclosure.c:831
#4  0xb68123c1 in g_signal_emit_valist (instance=0xa538680, signal_id=38, 
    detail=0, var_args=0xbf8154cc "R\225\016\267\030U\201\277")
    at gsignal.c:3214
#5  0xb6812d58 in g_signal_emit (instance=0xa538680, signal_id=38, detail=0)
    at gsignal.c:3361
#6  0xb70e95f5 in gtk_widget_grab_focus (widget=0xa538680) at gtkwidget.c:8075
#7  0x08075ab8 in gs_shell_back_button_cb (widget=0x97e5150, shell=0x96df1f0)
    at gs-shell.c:284
#8  0xb67fc68e in g_cclosure_marshal_VOID__VOIDv (closure=0x9713bb8, 
    return_value=0x0, instance=0x97e5150, 
    args=0xbf81579c "\223", <incomplete sequence \340\266>, marshal_data=0x0, 
    n_params=0, param_types=0x0) at gmarshal.c:905
#9  0xb67f9fc7 in _g_closure_invoke_va (closure=0x9713bb8, return_value=0x0, 
    instance=0x97e5150, 
    args=0xbf81579c "\223", <incomplete sequence \340\266>, n_params=0, 
    param_types=0x0) at gclosure.c:831
#10 0xb68123c1 in g_signal_emit_valist (instance=0x97e5150, signal_id=219, 
    detail=0, var_args=0xbf81579c "\223", <incomplete sequence \340\266>)
    at gsignal.c:3214
#11 0xb6812d58 in g_signal_emit (instance=0x97e5150, signal_id=219, detail=0)
    at gsignal.c:3361
#12 0xb6e03b14 in gtk_button_clicked (button=0x97e5150) at gtkbutton.c:1477
#13 0xb6e049cf in gtk_button_do_release (button=0x97e5150, emit_clicked=1)
    at gtkbutton.c:1888
#14 0xb6e04d78 in gtk_real_button_released (button=0x97e5150)
    at gtkbutton.c:2006
#15 0xb67fc68e in g_cclosure_marshal_VOID__VOIDv (closure=0x9756e90, 
    return_value=0x0, instance=0x97e5150, 
    args=0xbf815acc "\240", <incomplete sequence \340\266>, 
    marshal_data=0xb6e04d07 <gtk_real_button_released>, n_params=0, 
    param_types=0x0) at gmarshal.c:905
#16 0xb67fa3a5 in g_type_class_meta_marshalv (closure=0x9756e90, 
    return_value=0x0, instance=0x97e5150, 
    args=0xbf815acc "\240", <incomplete sequence \340\266>, 
    marshal_data=0x1fc, n_params=0, param_types=0x0) at gclosure.c:988
#17 0xb67f9fc7 in _g_closure_invoke_va (closure=0x9756e90, return_value=0x0, 
    instance=0x97e5150, 
    args=0xbf815acc "\240", <incomplete sequence \340\266>, n_params=0, 
    param_types=0x0) at gclosure.c:831
#18 0xb68123c1 in g_signal_emit_valist (instance=0x97e5150, signal_id=218, 
    detail=0, var_args=0xbf815acc "\240", <incomplete sequence \340\266>)
    at gsignal.c:3214
#19 0xb6812d58 in g_signal_emit (instance=0x97e5150, signal_id=218, detail=0)
    at gsignal.c:3361
#20 0xb6e018cf in multipress_released_cb (gesture=0x9657e38, n_press=1, x=23, 
    y=25, widget=0x97e5150) at gtkbutton.c:611
#21 0xb5b73f8a in ffi_call_SYSV () from /lib/libffi.so.6
#22 0xb5b73a1a in ffi_call () from /lib/libffi.so.6
#23 0xb67fb4ae in g_cclosure_marshal_generic_va (closure=0x97a91e0, 
    return_value=0x0, instance=0x9657e38, args_list=0xbf815f3c "\001", 
    marshal_data=0x0, n_params=3, param_types=0x96f3e48) at gclosure.c:1561
#24 0xb67f9fc7 in _g_closure_invoke_va (closure=0x97a91e0, return_value=0x0, 
    instance=0x9657e38, args=0xbf815f3c "\001", n_params=3, 
    param_types=0x96f3e48) at gclosure.c:831
#25 0xb68123c1 in g_signal_emit_valist (instance=0x9657e38, signal_id=215, 
    detail=0, var_args=0xbf815f3c "\001") at gsignal.c:3214
#26 0xb6812d58 in g_signal_emit (instance=0x9657e38, signal_id=215, detail=0)
    at gsignal.c:3361
#27 0xb6ee6c2e in gtk_gesture_multi_press_end (gesture=0x9657e38, sequence=0x0)
    at gtkgesturemultipress.c:273
#28 0xb67fd8c3 in g_cclosure_marshal_VOID__BOXEDv (closure=0x9743ae0, 
    return_value=0x0, instance=0x9657e38, args=0xbf81624c "", 
    marshal_data=0xb6ee6b8d <gtk_gesture_multi_press_end>, n_params=1, 
    param_types=0x9743af8) at gmarshal.c:1950
#29 0xb67fa3a5 in g_type_class_meta_marshalv (closure=0x9743ae0, 
    return_value=0x0, instance=0x9657e38, args=0xbf81624c "", 
    marshal_data=0x80, n_params=1, param_types=0x9743af8) at gclosure.c:988
#30 0xb67f9fc7 in _g_closure_invoke_va (closure=0x9743ae0, return_value=0x0, 
    instance=0x9657e38, args=0xbf81624c "", n_params=1, param_types=0x9743af8)
    at gclosure.c:831
#31 0xb68123c1 in g_signal_emit_valist (instance=0x9657e38, signal_id=207, 
    detail=0, var_args=0xbf81624c "") at gsignal.c:3214
#32 0xb6812d58 in g_signal_emit (instance=0x9657e38, signal_id=207, detail=0)
    at gsignal.c:3361
#33 0xb6ee2ce1 in _gtk_gesture_set_recognized (gesture=0x9657e38, 
    recognized=0, sequence=0x0) at gtkgesture.c:275
#34 0xb6ee2dd9 in _gtk_gesture_check_recognized (gesture=0x9657e38, 
    sequence=0x0) at gtkgesture.c:315
#35 0xb6ee369f in gtk_gesture_handle_event (controller=0x9657e38, 
    event=0xa3dbd28) at gtkgesture.c:624
#36 0xb6ee8827 in gtk_gesture_single_handle_event (controller=0x9657e38, 
    event=0xa3dbd28) at gtkgesturesingle.c:218
#37 0xb6ea8cfb in gtk_event_controller_handle_event (controller=0x9657e38, 
    event=0xa3dbd28) at gtkeventcontroller.c:216
#38 0xb70e8323 in _gtk_widget_run_controllers (widget=0x97e5150, 
    event=0xa3dbd28, phase=GTK_PHASE_BUBBLE) at gtkwidget.c:7442
#39 0xb70e7ce3 in gtk_widget_real_button_event (widget=0x97e5150, 
    event=0xa3dbd28) at gtkwidget.c:7220
#40 0xb6f46a0b in _gtk_marshal_BOOLEAN__BOXEDv (closure=0x966ad50, 
    return_value=0xbf81655c, instance=0x97e5150, 
    args=0xbf81668c "(\275=\n\244f\201\277(\275=\n\003", 
    marshal_data=0xb70e7ccd <gtk_widget_real_button_event>, n_params=1, 
    param_types=0x966ab80) at gtkmarshalers.c:130
#41 0xb67fa3a5 in g_type_class_meta_marshalv (closure=0x966ad50, 
    return_value=0xbf81655c, instance=0x97e5150, 
    args=0xbf81668c "(\275=\n\244f\201\277(\275=\n\003", marshal_data=0xc4, 
    n_params=1, param_types=0x966ab80) at gclosure.c:988
#42 0xb67f9fc7 in _g_closure_invoke_va (closure=0x966ad50, 
    return_value=0xbf81655c, instance=0x97e5150, 
    args=0xbf81668c "(\275=\n\244f\201\277(\275=\n\003", n_params=1, 
    param_types=0x966ab80) at gclosure.c:831
#43 0xb68123c1 in g_signal_emit_valist (instance=0x97e5150, signal_id=45, 
    detail=0, var_args=0xbf81668c "(\275=\n\244f\201\277(\275=\n\003")
    at gsignal.c:3214
#44 0xb6812d58 in g_signal_emit (instance=0x97e5150, signal_id=45, detail=0)
    at gsignal.c:3361
#45 0xb70e8cba in gtk_widget_event_internal (widget=0x97e5150, event=0xa3dbd28)
    at gtkwidget.c:7787
#46 0xb70e81a1 in gtk_widget_event (widget=0x97e5150, event=0xa3dbd28)
    at gtkwidget.c:7380
#47 0xb6f450de in propagate_event_up (widget=0x97e5150, event=0xa3dbd28, 
    topmost=0x0) at gtkmain.c:2420
#48 0xb6f453a0 in propagate_event (widget=0x97e5150, event=0xa3dbd28, 
    captured=0, topmost=0x0) at gtkmain.c:2522
#49 0xb6f4546a in gtk_propagate_event (widget=0x97e5150, event=0xa3dbd28)
    at gtkmain.c:2557
#50 0xb6f4416d in gtk_main_do_event (event=0xa3dbd28) at gtkmain.c:1754
#51 0xb6c11163 in _gdk_event_emit (event=0xa3dbd28) at gdkevents.c:69
#52 0xb6c486dc in gdk_event_source_dispatch (source=0x9690f88, callback=0x0, 
    user_data=0x0) at gdkeventsource.c:364
#53 0xb66eeed4 in g_main_dispatch (context=0x9658028) at gmain.c:3122
#54 0xb66efc41 in g_main_context_dispatch (context=0x9658028) at gmain.c:3737
#55 0xb66efe26 in g_main_context_iterate (context=0x9658028, block=1, 
    dispatch=1, self=0x964d000) at gmain.c:3808
#56 0xb66efeee in g_main_context_iteration (context=0x9658028, may_block=1)
    at gmain.c:3869
#57 0xb68fa44c in g_application_run (application=0x96538d0, argc=1, 
    argv=0xbf816a54) at gapplication.c:2308
#58 0x0809b4b9 in main (argc=1, argv=0xbf816a54) at gs-main.c:50
(gdb) print box
$1 = (GtkListBox *) 0x0
(gdb) print widget
$2 = (GtkWidget *) 0xa538680
(gdb) print *widget
$3 = {parent_instance = {g_type_instance = {g_class = 0x9bdfe70}, 
    ref_count = 3, qdata = 0xa3db488}, priv = 0xa5385f0}
(gdb) print row
$4 = (GtkListBoxRow *) 0xa538680
(gdb) print *row
$5 = {parent_instance = {container = {widget = {parent_instance = {
          g_type_instance = {g_class = 0x9bdfe70}, ref_count = 3, 
          qdata = 0xa3db488}, priv = 0xa5385f0}, priv = 0xa5385e0}, 
    priv = 0xa5385d8}}
