FS-6235 try this patch, this will send you a DOWN state at last

src/mod/endpoints/mod_rtmp/mod_rtmp.c

@@ -222,6 +222,9 @@ switch_status_t rtmp_on_destroy(switch_core_session_t *session)
 	tech_pvt = switch_core_session_get_private(session);
 
 	if (tech_pvt) {
+
+		rtmp_notify_call_state(session);
+
 		if (switch_core_codec_ready(&tech_pvt->read_codec)) {
 			switch_core_codec_destroy(&tech_pvt->read_codec);
 		}