Shortly after the beginning when Sonic and Tails encounter a robotic eye, which has a hidden camera. They are looking directly at it as they're communicating with Robotnik, but on Robotnik's screen which has Sonic and Tails, the picture is at the angle, which was originally used for the shot of Sonic and Tails. Robotnik's screen should have shown Sonic and Tails from the angle, which the camera was facing them.