This fill, agitate, fill, agitate, fill, agitate, is a common thing for load sensing washing machines to do. These washers usually have no water level selector.
I just ran into a Whirlpool direct drive (design 2000) that Whirlpool has modified to do this. It had no water level selector, and it would fill, agitate, fill some more, agitate again, etc..... Now all Whirlpool needs to do is add a recirculating pump,and we have a High Efficiency design 2000. Maybe they could put a pump between the tranny and the motor, so it would recirculate water during the agitate.