I have the latest version installed along side transport drones and the Mining Depot doesn't connect to the road, there isn't even a caution pad. Am I missing something required to do this, or is this a removed feature?

So I set up a test area, the Mining Depot is connecting to the road network. It just doesn't show the caution pad. Any ideas on why?

The mining depot no longer has its own caution pad, it is like 'inside' the entrance, the road network maybe still has one, it should be on the opposite side from the entrance