Oh, I'm sure that still happens but I hear fewer and fewer reports of it. And, actually, the new translation of the Novus Ordo Mass accurately translates the words of consecration so that the NOM might even be valid ... especially when the 1st Canon (=very close to the Tridentine Canon) is used.
I wonder if there are "fewer and fewer reports" because it happens less often or if the people are so inured by such things and so ignorant of the faith that no one even thinks its something that should be reported.
When I and my family got up and left the service when the priest made up obviously invalidating words of Consecration, we were the only ones to do so. In fact, when I later talked with a few others who are there, they either said that they weren't paying attention and didn't hear anything wrong or, as one man replied, "Oh, Father is always doing crazy stuff. What does it matter?"