As I said recently, If you put these lines into your application you can avoid this behavior...
esriConfig.defaults.map.zoomDuration = 0;
esriConfig.defaults.map.zoomRate = 0;
But I have found another ralated bug.
If you have a ArcGISTiledMapServiceLayer on top of a base map layer... this tile layer dont draw correctly. You can check this behaviour in this jsfiddle
Bug Navigation Mode - JSFiddle
In order to solve this, you should set mapNavigation to "classic"
map = new Map("map", {
basemap : "gray",
center : [-122.45, 37.75], // longitude, latitude
zoom : 1,
navigationMode: "classic"
});
Regards