Comment 2 for bug 867565

StacktraceTop:
 g_object_notify (object=0x9c68280, property_name=0x1094722 "ab-label") at /build/buildd/glib2.0-2.30.0/./gobject/gobject.c:1003
 gtk_range_accessible_finalize (object=0x2) at /build/buildd/gtk+3.0-3.2.0/./gtk/a11y/gtkrangeaccessible.c:73
 g_object_ref (_object=0x9abcba0) at /build/buildd/glib2.0-2.30.0/./gobject/gobject.c:2648
 g_closure_invoke (closure=0x9abcba0, return_value=0x0, n_param_values=1, param_values=0x9c00e00, invocation_hint=0xbfe18f60) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=0x99499e0, detail=0, instance=0x9a016d0, emission_return=0x0, instance_and_params=0x9c00e00) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272