Request hangs when selfHandleResponse: true

[CanLikeTo]

Hi, I'm trying to set up a simple dev proxy where the auth endpoints are proxied to another service. Basically to avoid CORS issues. In order to make this work, I have to rewrite the host part of the set-cookie header. I've been following the response-interceptor recipe and basically my request hangs and eventually times out as soon as I set selfHandleResponse: true.

This is my setup:

const app = express();

app.use(
  '/api/auth',
    createProxyMiddleware({
      target: 'https://playground.projects.oryapis.com',
      changeOrigin: true,
      pathRewrite: {
        '/api/auth': '/'
      },
      logger: console,
      plugins: [simpleRequestLogger],
      secure: false,
      selfHandleResponse: true,
      on :{
        proxyRes: responseInterceptor(async (responseBuffer, proxyRes, req, res) => {

          return responseBuffer;
        })
      }
    })
);

app.use(
  '/',
    createProxyMiddleware({
      target: 'http://localhost:3000',
      logger: console,
    })
);

My versions are as follows:

node: v16.14.2
http-proxy-middleware: 2.0.6
express: 4.17

I'm also developing on Github Codespaces.

[chimurai]

Dupe of #807 (comment)

[CanLikeTo]

Thank you very much!