Comment 2 for bug 1055836

StacktraceTop:
 g_type_check_instance_cast (type_instance=0xded6a0, iface_type=14606848) at /build/buildd/glib2.0-2.33.14/./gobject/gtype.c:3997
 ?? () from /tmp/tmpZGaAyD/usr/lib/x86_64-linux-gnu/libdbusmenu-gtk3.so.4
 g_closure_invoke (closure=0xdf8a50, return_value=0x0, n_param_values=2, param_values=0x7fff63798f80, invocation_hint=0x7fff63798f20) at /build/buildd/glib2.0-2.33.14/./gobject/gclosure.c:777
 signal_emit_unlocked_R (node=node@entry=0xc0a2b0, detail=detail@entry=703, instance=instance@entry=0xc6cc00, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff63798f80) at /build/buildd/glib2.0-2.33.14/./gobject/gsignal.c:3551
 g_signal_emit_valist (instance=0xc6cc00, signal_id=<optimized out>, detail=703, var_args=var_args@entry=0x7fff637991d8) at /build/buildd/glib2.0-2.33.14/./gobject/gsignal.c:3300