When not logged in, and viewing a forum entry, and then you click Reply, you are taken to the log in screen as you can see in this screencap.  I entered Intentional Theatre as my sign in name, and entered my correct password, unchecked the "next time..." box, and click the Sign In button.

I am then presented with the dialog box that asks me to confirm the account for which I am changing my password.  I am not trying to do that.

I click the Cancel button, and get logged in.

Er.... uh.....huh?????[:^)]