I washed a red, white and blue quilt to hang it up in a show. The quilt is 15 years old and had been washed several times. It hangs high up in my entry foyer so it doesn't get washed often. For some reason the red bled into certain of the white fabrics. I have never had it bleed before and I did put in color catchers. I rewashed it with Oxy Clean which had been suggested elsewhere. It took some of the color out. I also was afraid to put Dawn dish soap in my HE frontloader. I soaked it for about an hour with Dawn dish soap in my laundry tub. I rinsed it and spun it out in the washer. This did the trick. It is barely noticable now.
I can't explain why your jelly roll fabric didn't pick up the dye. I would email the manufacturer.