Content-type not set to application/x-www-form-urlencoded for POST

[krupa32]

I have a collection with few GET requests and a POST request. When I load and send a GET request, followed by load and send a POST request, the Content-type goes as text/plain instead of application/x-www-form-urlencoded.

However, if I load the POST, change the Request Body->Type to something else and restore it again to URLencoded form data, Content-type goes correctly.