No topic causes all MQTT nodes to disconnect

Just noticed that injecting a message into MQTT out without setting a topic causes all MQTT nodes to disconnect for a few seconds.

I realise it should have a topic, but the node should really handle this more gracefully ?

It looks like the issue has been around for a few years -

If you are using mosquitto then I think it may be that mosquitto disconnects you. In the mosquitto log I see
Client tigger disconnected due to malformed packet.

I am using Mosquitto, but if there is no topic defined, I think the node should just show an error and not pass to the broker, since this then affects all flows.

Can you raise an issue on github so we can track and resolve?

Done -

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