[nickmooney]

Your browser remembers and replays it. localStorage/sessionStorage/cookies aren't available to parse by the time request headers are sent.

You'll notice this behavior goes away if you select the URL bar and hit enter (as if you were navigating to the site manually).

[stoicjumbotron]

Yeah you're right. Selecting the URL and hitting enter did clear the Referer. One comment says the browser identifies the Referer by looking at the history is that so?