Black clothes always comes out of washer with white substance on it

Hi all, puzzled by this one. It happens about 75% of the time and only to my black clothing.

It’s not lint, it’s more some sort of white substance that I can scratch off if I pick at it. Obviously that would take forever. I’ve used a lint remover after drying and that doesn’t work.

I’ve tried different detergent and run the washing machine through cleaning cycles yet this issue persists.