I have a dishwasher that seems to work fine, except that after it's done it's still filled with soap bubbles. The water has drained, but not the soap. Dishwasher repair person looked at it, suggested replacing the motor, but that didn't work. The repair person even called the manufacturer, but the manufacturer didn't know what was wrong either.
I have no idea what the problem is ... for now, I've been washing in the sink and drying with a dish dryer from Japan (shokki kansouki).