Breaking change: only when the Content-Type is set to application/x-www-form-urlencoded, the Plus Sign is replaced with Spaces (https://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.1)
Breaking change: only when the Content-Type is set to application/x-www-form-urlencoded, the Plus Sign is replaced with Spaces (https://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.1)