Anti-aliased edges in WEBGL mode in p5js

p5.js Coding Questions
1

Shape edges are jagged in p5js WEBGL mode compared to the default 2D mode.
smooth() and setAttributes(‘antialias’,true) did not work or improve this.
Does anyone know how to achieve clean anti-aliased edges for p5js WEBGL shapes?
Here is an example output:
image
Here is the code:

function setup (){
  createCanvas(100,100,WEBGL) //left image
  //createCanvas(100,100) //right image
  noStroke();
}
function draw(){
  // translate(50,50) //right image only
  background(255)
  fill(0)
  rotate(PI/3)
  rectMode(CENTER)
  rect(0,0,67,67)
}