Actor disappears when it's moved too close to the boards of the screen

Hey! When I touch on the screen my character moves to that location but if it’s too close to the left or to the right board of the screen my character disappears but when I touch closer to center on the screen it returns. I’m using Orthographic Projection Mode in my Camera Settings and its Ortho Width is 512. If I switch Ortho Width to 400 my character won’t disappear. Maybe I need to change something in Project Settings…