My issue started on 8/9/19 at 4:11am and 10:12pm. They only seem to happen late night/early morning. Most days were at/around 4:11am. I'm not sure what software version I was on at that time. I submitted my issue to Tesla support. I'll let you know what they say. I asked them if the day before (8/8) was when my car was updated to 28.2. It is still happening for me on 28.3.