**maptalks's version and what browser you use?** ---- **Issue description** ---- 这个问题的已经定位到 https://github.com/maptalks/maptalks.js/blob/18770143acbe6aa024bfa6e0afe91761c8c62278/src/map/Map.Anim.js#L101 **Please provide a reproduction URL (on any jsfiddle like site)** ----
