Crazy behavior of draggable annotations (iOS)

This is my code:

self.mapview.addAnnotation(Map.createAnnotation({
        latitude : e.coords.latitude,
        draggable : true,
        longitude : e.coords.longitude,
        title : 'Apfelbaum',
        image : '/assets/tree.png',
}));

Obervation: First time seems all OK. After dragging of annotation I see a crazy behavior: If I pan the map (regionchanging) then the annotation doesn't track the map, it tracks the parent we (and walk over the map). It seems it lost the link to map.

Any ideas? ti.map2.0.2, sdk3.2.3.GA