Fetch not following redirects

[MendyBerger]

Fetch doesn't follow redirect responses even when explicitly set to follow.

Given the following JS

const STATUS_CODE = 302;
const EXPECTED_LOCATION = "https://example.com";
const URL = `https://httpbin.org/redirect-to?url=${EXPECTED_LOCATION}&status_code=${STATUS_CODE}`;

addEventListener('fetch', async e => {
    let promise = fetch(URL, {
        redirect: "follow",
    })
        .then((response) => {
            if (response.status !== STATUS_CODE)
                throw new Error(`Expected status code ${STATUS_CODE}, got ${response.status}`);
            const location = response.headers.get("Location");
            if (location !== EXPECTED_LOCATION)
                throw new Error(`Expected location ${EXPECTED_LOCATION}, got ${location}`);
            return response.text();
        })
        .then((text) => {
            if (!text.includes("Example Domain")) {
                throw new Error("Didn't redirect to example.com");
            }
        });
    e.waitUntil(promise);
    await promise;
    e.respondWith(new Response(`Redirected successfully!`));
});

The component throws with the following output:

stderr [0] :: Warning: Promise passed to FetchEvent#waitUntil was rejected with error. Pending tasks after that error might not run. Error details:
stderr [0] :: Didn't redirect to example.com
stderr [0] :: Stack:
stderr [0] ::   promise<@component.js:19:23
stderr [0] ::