Project World to Screen Location stops returning a value

@BrandenMarais I seem to be running into a weird issue when the camera is infront of my world position:
https://youtu.be/5PHJEjvI9oI

I am using your function and was wondering if you had any idea on why the screen position would be swaying right when moving infront of the world position? And I was also wondering if I could see how you use the function for off screen indicators?