They changed it without saying anything, at least that I know of. I don't like the change, because I'm actually more interested in the quality of the comment than its civility. I sometimes am thinking of what used to be when I assess them and am actually answering a different question (in my head). I think it's a glitch, but I'm guessing it was a purposeful decision from their point of view. I'll bet you don't like the glitch either?