Are you likely to change this from
[https://raw.githubusercontent.com/eclipse/paho.mqtt.javascript/master/src/mqttws31.js]
to
(https://raw.githubusercontent.com/eclipse/paho.mqtt.javascript/master/src/paho-mqtt.js).
as this seems to resolve the MALFORMED UTF disconnections.
Are you likely to change this from
[https://raw.githubusercontent.com/eclipse/paho.mqtt.javascript/master/src/mqttws31.js]
to
(https://raw.githubusercontent.com/eclipse/paho.mqtt.javascript/master/src/paho-mqtt.js).
as this seems to resolve the MALFORMED UTF disconnections.