Redirected output starts response headers on same line as request body

When I run a POST request without redirection, I see the response headers start on a new line:

            }
        }
    }
}

HTTP/1.1 201
Date: Mon, 21 Dec 2020 13:39:00 GMT
Content-Length: 0

But when I redirect the output, I see the HTTP/1.1 201 on the same line as the request:

            }
        }
    }
}HTTP/1.1 201 
Date: Mon, 21 Dec 2020 13:36:09 GMT
Content-Length: 0

The options I specified in each case were http -v --pretty format --unsorted; the only difference was in the second case I redirected the output to a file.

[jakubroztocil]

HTTPie 2.4.0 fixing the incorrect formatting has just been released 🥧

[jakubroztocil]

@sebastianczech Those are relevant bits indeed. There are quite a few scenarios that need to be handled. What has made things even more complicated, and has introduced this bug, is the new support for streamed uploads with simultaneous terminal output. I’m looking into fixing this, starting with ensuring we have tests for all the scenarios. Will publish soon.