Random(?) USB playback issues

Hi.

I have a 2018 Prius Prime that I recently purchased. My old car had a very nice after-market audio thing that worked flawlessly.

The USB player in the 2018 Prius seems to act oddly: most of the time, when I turn off the car, and then turn it on, the track will restart from where I left off. However, at random times (I haven't found any pattern to it yet), the track decides to re-start. I wouldn't mind this for a 3-minute song, but when listening to audio books or old-time radio shows, this is extremely annoying.

Looking for ideas?