Just before the cure is applied to the little girl at WCKD headquarters. A square reflection of the camera is seen in the eye's of the girl when she is laying on the medical table with the lights above during a close-up of her face.
When the VTOL goes to the top of the WCKD headquarters they bank right to turn right. That is seen from the cockpit. The horizon instrument stays horizontal compared to the plane but it should move to be aligned with the actual horizon. The cockpit instruments are a still picture.