MQTT integration failure probably when MQTT server restart

[disk91]

Describe the bug
A working MQTT integration is terminating in error for every message send. the probable reason is when the mqtt server has been down even if restart later.

As a router ower, I see a lot of problem with MQTT integration in the trace, it probably comes from this problem.

To Reproduce
not sure, try to kill the mqtt server and see if the router reconnect or not.

Environment
problem seen on helium.com and helium-iot.eu

Workaround
go to flow manager, remove the MQTT integration node, add the integration node again, link it.... the integration restart to work.

[SAVAMforWIN]

i have the same issue, anyone know to solve this error?