No Set-Cookie header on Axios - vue.js

Question

I am using a Symfony API backend and want to authenticate by REST call via Axios inside a Vue App.
The authentication works fine when using POSTMAN. It stores a session cookie and resends it on subsequent requests.
However, when I use Axios it won't give me the Set-Cookie header.
What I tried so far:
Adjusted CORS settings on Symfony backend (no CORS errors - all routes working)
Set { withCredentials: true } as config parameter on Axios post request.
Symfony EventSubsriber for injecting CORS headers:
public function onKernelResponse(ResponseEvent $event)
{
$response = $event->getResponse();
$response->headers->set('Access-Control-Allow-Methods', '*');
$response->headers->set('Access-Control-Allow-Headers', [ 'Content-Type', 'Set-Cookie' ]);
$response->headers->set('Access-Control-Allow-Origin', 'http://localhost:3000');
$response->headers->set('Access-Control-Allow-Credentials', 'true');
$response->setStatusCode(200);
}
Note that this is for local testing only.
Axios Request:
login(user, pw) {
return axios.post(cfg.apiUrl + '/api/login', {
username: user,
password: pw
},
{ withCredentials: true }
);
}
Follow up request:
test() {
return axios.get(cfg.apiUrl + '/api/test');
}
Could someone point out what I am still missing? Why do I get the header on POSTMAN, but not on Axios?

Answer 1

The solution is to also add the { withCredentials: true } in further requests. As it seems, it is not possible to read the Set-Cookie header via Axios, as #jub0bs pointed out.
The correct code for a follow-up request looks like:
test() {
return axios.get(cfg.apiUrl + '/api/test', { withCredentials: true });
}