High water level
Yes it does fill that high on the cool down and all 3 rinses, but then it is a Hoover Logic built in June 1988.
I have extremely sensitive skin with very bad eczema and contact dermatitis, the detergent that I use, and the rinsing performance of my washing machine has never had any affect on it, it's always bad whether I use tonnes of strong detergent in a modern low water use machine or if I use barely any delicate detergent in one of my vintage machines.
Lashings of diprobase and betnovate are all that keep it relatively under control.
Matt