One thing to look at is your peep sight, and your anchor. The sight looks right to me. I used to mess with Mathews bows, and nver had this issue. They usually tuned closer to the riser than other bows, but with sights I never had this issue. I have encountered this with some folks, and the issue was the peep, and "D" loop, or nock point. Your regular form you are used to may not go well with this bow--I've seen this before too.
I agree though that you should not have your sight all the way down like that. I always tell folks when sighting in--chase the arrow when moving the sight.