On my iPad, when I try to do this with the shift key, it seems to have trouble tracking where my finger slides. It only follows me when I'm moving really fast.

On my iPad, when I try to do this with the shift key, it seems to have trouble tracking where my finger slides. It only follows me when I'm moving really fast. As soon as I slow down, it gets stuck on whatever key I'm over. It doesn't do this with the .?123 key.