I still live at home with my parents, but I do my own washing, etc. Unfortunately, it's sort of a mystery because none of us use powder. However it has something to do with the liquid detergent, because when you substitute it with wool wash instead to wash clothing, the problem is almost eliminated.
Even though it is 3 AM here, you made me have a craving to get up and do laundry, so I took the dry clothes out of the dryer and put the freshly washed ones in. However, I missed a stain on my daughter's dress, so I treated it and put it back into the washing machine to soak.
I have never had a problem like that with liquid detergent, but we switched to liquid detergent because my husband had the problem often with powdered detergent, I think because he always overloaded the washing machine. Woolite is really good about not leaving a residue or fading colors, though. I use Woolite for Dark Colors in my dark laundry.