Do you play mutually blind combatants both get disadvantage?

@JeremyECrawford Do you play mutually blind combatants both get disadvantage? Or does advantage and disadvantage cancel out as Raw implies?

— Klaude Thomas (@vonklaude) May 27, 2017

Advantage and disadvantage cancel each other. That's fundamental to how they work. #DnD https://t.co/QHbyxuUIyV

— Jeremy Crawford (@JeremyECrawford) May 27, 2017