So here's the deal, my specs are in my signature below for my cMP. I updated to the new release today and noticed that upon shutting down, the screen goes black for a bit, and dancing white dots appear on the lower/right quadrant of my display. It looks like a partial word if you connect the dots. Well... or at least W.... Is what it looks like, IDK what this is. After about 2 seconds of the dancing dots, the Mac shuts down as normal. Anone have a clue what that's about?