Spot the bug - #165: Floating Balloon Tick

programming web dev
1

Why is this floating balloon animator speeding up out of control?

function floatBalloon(posY = 0) {
  balloon.style.transform = `translateY(${posY}px)`;
  if (posY < 300) {
    requestAnimationFrame(floatBalloon(posY + 2));
  }
}

Reply with what is broken and how you would fix it.