I have a newly created RasPi on Raspian running the latest version of Node-Red and Mosquitto - all freshly installed.
Everything is operating fine BUT ...
When I deploy a change, the status indicators on the MQTT nodes changes to 'disconnected' and never show the reconnection. This is clearly wrong as I can see messages appearing via the debug node, and everything appears to operate.
If I refresh the page - the correct status is shown.
I am using Windows 10 with Chrome browser (all latest) to edit the system via WiFi to the RasPi.