Saw this post on the ffxiv facebook page, in the comments about the video. People were voicing concern over the start/stop animation and Wolf Ookami, listed as the Editor in Chief for FFXIV - A Realm Reborn, said this:

"If I remember well, it's not a mistake, the start-stop animation is removed by choice because it causes some graphics collisions problems and doesn't fit well with the new gameplay ^^' I'll try to find the link where I read or watch that."