A:Answer There are only 2 reasons I can think of, that might cause this to happen.
You must be using High Efficiency (HE) labeled laundry soap. I do recommend liquid over powder. More soap does not make cleaner clothes. It is better to use less than you need, than more than you need.
This washer is very particular regarding soap as it only uses just enough water for the size of the load of laundry. I would also make sure to spread the laundry soap around the entire drum as you pour it in, not just in a pile.