PShape.setFill() no longer works

Created by: cacheflowe

This used to work in Processing 3.x, but no longer works in recent Processing 4 versions.

Here's a complete sketch. In Processing 3.x and up to 4.0.b2, we see the box updates to random vertex colors. Since Processing 4.0.b4 (or maybe beta 3), it doesn't have an effect.

PShape shape;
  
public void setup() {
  size(640, 360, P3D);
  shape = createShape(BOX, 100, 100, 100).getTessellation();
  updateFill();
}

public void updateFill() {
  int numVerts = shape.getVertexCount();
  for (int i = 0; i < numVerts; i++) {
    shape.setFill(i, color(random(255), random(255), random(255)));
  }
}

public void draw() {
  background(0);
  translate(width/2, height/2, 0);
  rotateY(frameCount * 0.01);
  shape(shape);
}

Comienza ejecutando el sketch completo de Java incluido en el issue con Processing 4 y compara su comportamiento de color por vértice con Processing 3.x. Sigue la llamada a PShape.setFill() a través de createShape(BOX, ...).getTessellation() y shape(shape). Se considera terminado cuando el sketch vuelve a actualizar la caja con colores de vértice aleatorios en las versiones afectadas de Processing 4.