Comment 2 for bug 860330

StacktraceTop:
 g_object_notify (object=<optimized out>, property_name=0x7f31e0243382 "accessible-value") at /build/buildd/glib2.0-2.29.92/./gobject/gobject.c:1003
 g_closure_invoke (closure=0x1e30020, return_value=0x0, n_param_values=1, param_values=0x1feac80, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.29.92/./gobject/gclosure.c:774
 signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x1e05370, emission_return=0x0, instance_and_params=0x1feac80) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3272
 g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=0x7fff77244878) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3003
 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.29.92/./gobject/gsignal.c:3060