Disable swipe lock screen on Galaxy S4 running JellyBean

Every since my Galaxy S4 phone was upgraded to Android 4.3 (Verizon), I have had a problem disabling the swipe lock screen. I go to Settings -> My Device -> Lock Screen -> Screen Lock: - If I set the option to 'Swipe', I get the swipe lock screen, as expected. - If I set the option to 'None', I **still** get the swipe lock screen. - If I set the option to 'PIN', I get the swipe lock screen **and** the PIN lock screen. (It is annoying to unlock the phone, and more so when I receive a call.) I test this by using the power key. Is there a bug in the software or is there no legitimate way to disable the very annoying swipe lock / swipe lock screen? Is there a 3rd party way to allow a PIN lock without having a swipe lock as well?