If you edit an MQTT node (in or out) and in the Server
section select the Messages
tab and in Messages sent on connection (birth message)
or Message sent on an unexpected disconnection (will message)
put a #
(pound sign) in the topic, when you deploy the node will only show disconnected
.
This happens in NR v1.3.5 and NR 2.2.2
Interestingly it does not happen (that I have been able to cause) if you add it to the topic in Message sent before disconnecting (close message)
Moral: If your MQTT nodes show disconnected
all the time, check those areas for a #
in the topic.