I have a piece of code that behaves differently in Chromium and Firefox.

// window.js
const worker = new Worker("worker.js", { name: "1" });

// worker.js
const worker = new Worker("worker2.js", { name: "2" });
const sab = new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT));

worker.postMessage(0);
Atomics.wait(sab, 0, 0);

// worker2.js
onmessage = ({ data }) => console.log(data);

In Chromium, the worker2 never receives the message because Atomics.wait blocks postMessage, but I want to send the message synchronously.