MessageReceived not fired when subscribing again to just unsubscribed topic

Unsubscribing a topic with QMqttClient and then directly subscribing it again, when using the QMqttSubscription classes returned by QMqttClient::subscribe.

Example project attached.

The slot onSubscription1 is never triggered
The payload "trigger_subscription_1" is published correctly, as checked with "mosquitto_sub -h localhost -p 1883 -t Test".