[p5.js 2.0+ Bug Report]: `noLoop()` not working on WebGPU mode

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• WebGPU
• p5.strands
• Build process
• Unit testing
• Internationalization
• Friendly errors
• Other (specify if possible)

p5.js version

2.3.0

Web browser and version

Firefox 151.0.4

Operating system

MacOSX 26.5.1

Steps to reproduce this

Steps:

1. Create a WebGPU sketch
2. Run following snippet
3. Canvas should be grey, but isn't

Snippet:

async function setup() {
  await createCanvas(400, 400, WEBGPU);
  noLoop();
}

function draw() {
  background(128);
}

Canvas exists, but the draw doesn't seem to run. A workaround is using noLoop() when frameCount > 1

Start by running the provided WebGPU sketch in p5.js 2.3.0 with Firefox to confirm that noLoop prevents the expected draw. Trace the WebGPU rendering and animation-loop entry points, then add or update coverage for this setup so the canvas is grey after noLoop() and the workaround is no longer needed.