I bought a bolt of some black fabric - maybe 20 years ago? I also bought two bolts of two dark blues of the same brand.
I finally decided to wash some of it so that I could use it. The blues are fine - minimal shrinking, no color loss.
This is the first time EVER that I have seen a fabric do what the black did. I put it in hot water - the water turned black - and there was sort of a sooty residue left in the water. Rinsed it again and again - still black water. Put it in the dryer - it left black "soot" in the dryer.
Then put it in the washing machine - it SHREDDED! I also wiped it with a white cloth - and it left "soot" on the white cloth.
I put it all in the trash. (Might have been good for a raggedy Halloween costume though.) I called the manufacturer, and because of the time delay - too bad, so sad.
Moral of the story - keep your receipts. Wash your fabric (if you do) SOON after you get it.
I consider bleeding fabric to be defective and I will be a Problem In The Area when I return it.