https://www.veed.io/view/b29989be-1241-4af4-91b1-586f8d884574 here is the uploaded video. You can just look at the last 10 seconds or so. Hopefully this helps!
I was playing around with this a bit with a friend and we found that sometimes when you hold a piece right as it's locking into place that can cause you to get a floating piece in the middle of a field. We think this might be related since similar conditions seem to trigger the game over - maybe the game over is a floating piece that spawns at the top of the screen? I'll try to share some recordings when we can get some.