Any updates on this? I have seen this twice now in my 2019 after a 16 hour driving trip using Android Auto. I turned the car off and after it sit while I had dinner it went back to working. The second time my wife looked up while I drove and she found some article, maybe the reddit one, that said if someone text's you it releases it. She texted my phone and it released the lock the navigation had on it. It happened with me using Google maps as I have been using that since they added in speed limits. The first time it happened it happened out of the blue mid-trip with a destination entered. Can't remember the second time if there was a destination set. In either case, next time I will try to use voice command to change navigation end point or something to release it easier next time. Another thing I read may help release it is a full restart of the sytem by holding in the power button for 10 seconds. I'll try that as well. Definitely curious on others seeing this or what others have heard. Hitting the infrawebs it seems that different years are all seeing this. Not sure if this is any precursor to the 2018 head unit black out issues.