strange glitch in play mode?

I am just messing about with the projectile movement to create a bouncing ball. However, I have noticed something which I think is odd. When I am in editor mode and set the camera to Orthographic (Top) and press play I get a random grey sphere in the camera:

Orthographic mode (in editor)

If however I change the editor to perspective mode and hit play again the sphere is not there… why is that? why does it matter what view the editor is in to the play camera and what is that weird sphere?

Perspective mode (in editor)


ignore me.,…I am officially an idiot! #whishIcoulddeleteastupidpost