An annoying "feature". It should know when you get to your destination. And you could drive 100s of miles after that and it will still show 0 mi. Remember to hit "End" when nav says you have arrived.
That is also what you will see if you use A Better Route Planner through Android Auto. (At least on my car) Not sure if ABRP is not sending the data correctly, or the MME is not responding correctly.