Traffic light sensor issues

The traffic light sensors are not detecting traffic waiting on Cunningham drive turning left into Fareham when there is a moped at the front of the queue. The traffic lights stop the traffic on the main road then turn green again straight away and the traffic light to Cunningham drive remains on red. I saw this happen before and the traffic backs up. This morning, I had to move into the wrong lane to turn into Gosport for the traffic lights to detect there was waiting traffic on Cunningham drive and turn green.