MKMapView moves around screen

I am using an MKMapView to create a th开发者_如何学JAVAumbnail on my screen. However it doesn't render in the position that I set it to on IB. It moves up. It also moves up even further after I go to push and pop a screen over it. Any idea how to position this correctly?

I figured it out. It was related to auto sizing.

also there was toolbar at the bottom after the push/pop.