extra p tag issue

[alombia]

I am new to github so not sue where to submit an issue. There is an issue with an extra p tag or line on simeditor. It exists even on the main demo page so it cannot be an issue with my setup. To see the issue go to main simditor demo page delete all the default text on the editor, press delete (backspace) again. A new line (p tag) will appear. You can see this by using the down arrow on your keyboard. In other words if you press backspace twice a new line appears.