My password becomes visible in browsing history on Kotaku when I log in.

My password appears in the computer's webpage history whenever I log in on Kotaku. When I enter my user name and password, it takes me to a blank white page with my password in the url. I then have to hit the back button in order to then be logged in. I then have to delete my viewing history so that my password is not visible to other people who use the same computer.