While being chased through the streets by Baron Blood, Eva runs into the same alley twice (with the same advertisement plastered against the building).
Several times it changes between day and night between shots. For example, Peter arrives in broad daylight when he rescues Eva from the Baron, but it is the middle of the night when he brings her to the dorm afterwards.
At the airport the uniformed airline employee greeting passengers at the base of the portable stairway suddenly disappears between shots.
Eva's hairstyle markedly changes in a matter of minutes: from the dinner scene at Karl's house to just a few minutes later when she and Peter are inside the castle, her hair goes from a wavy perm to being nearly straight-combed.
When Peter comes to Eva's rescue at the castle, it is clearly broad daylight. Eva begs Peter to take her home, which he does, but now as we see him drive up to her student dorm, it is pitch black outside.
When Eve is running away from the baron throughout the streets, when she comes to a wall next to another wall with a poster for the second time, she touches the wall and the wall shakes, thus revealing it's a set piece.
Smoke coming from baron's bullet wounds. Smoke doesn't come out of bullet holes. Smoke seen here is probably from practical effects imitating the bullet impact.