MapView animate to point problem

I have a following problem.

I have a mapView with custom overlays which show popups. Popups appear properly.

The issue is that when开发者_如何学运维 i zoom in with zoomButtons and I tap an overlay it animates to a tottaly different place.

What might be the issue ?

Maybe you're changing the position in onTap or onTouchEvent of your custom ItemizedOverlay