POST to /echo getting CORS warning

[matfricker]

I am getting "Cross-Origin Request Blocked" warning coming up in the console, when posting to /echo and the post is never made. Can't see any "Access-Control-Allow-*" headers in the OPTIONS response, for Origin, Methods, Headers or Credentials.

I have however, been able to post to /request with success. Not sure if this is by design or I am doing something wrong.