The good thing is that the "you took a screenshot" notifications persist, so that I can still be reminded of it the day after. Even weeks after, if I don't get around to clear them – which I will do this time, because now it actually takes a few seconds to open the clock menu because of all these notifications…
Btw, I've taken several screenshots today also, but those notifications just appears for a very short time and then are gone. What's going on there? It's good, but not normal.