It is present, but it does not happen as often as it should. I did not watch this year's stream but I remember from last year's gameplay stream they showed an example. I remember that they kind of had some difficulty getting it to trigger. That should not be the case.
In the video above watch the defender over the weakside slot. He cannot jam him at the line, but at least give him a chuck.
The defenders in a zone immediately start dropping back instead of first reacting to the offense. In most zone schemes the first coverage duty of an outside LB or safety in the box is to wall off #2 from inside routes. They don't do that in Madden; it is a very passive zone.