Bun + elysia + React SSR stopped working since 1.4.13

[rauanmayemir]

We tried upgrading Elysia from 1.4.9 and managed to go up to 1.4.12 after which it stopped working.
When on 1.4.13, response is returned blank, no error, no exception.

Our handler is something along the lines of:

async function* (ctx: InferContext<typeof app>) {
  const stream = await renderToReadableStream(<ReactApp/>, options);

  return new Response(stream, {
    headers: {
      'Content-Type': 'text/html',
    },
  });
}

I reviewed the release notes and nothing suggests critical changes unless afterResponse is breaking the expected behavior because we do use a guard, but for beforeHandle.

Please guide me in the direction where I should look.