Taliyahs W

Why update that? At least before, I was only rooted for .5 seconds, then i could move without canceling the ability. Now, I'm forced to continuously move in a direction, and changing my movement direction cancels the ability. Now i pretty much have to manually stop myself and cast it. Its not too difficult, but its annoying and awkward as hell. Why did they change it this way? Why can't it be like anivia's wall...