This has become a popular subject as of late. A lot of people have said that the hunt mob just doesn't appear on screen for them. I have not had this problem myself (I play on PS4.) What platform do you play on? If PC, what is your hardware? Maybe it's not even a personal hardware issue. Maybe it's a server issue.

I want to make clear that this is purely out of morbid curiosity. Clearly lots of players are having this problem and it would be nice to see a pattern.