These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Special Effects Failure: The model town used in the introduction sequence is very well made and fairly convincing... until a toy car that obviously has no driver rolls through and ruins everything.
Values Dissonance: The film was made on the eve of World War II, when the rest of the world was largely ignorant about how horrible the Nazi government was. Hence, they're portrayed here with a lightness that feels extremely jarring these days. Sure they're the villains and they try to kill everyone during the film's climax, but they're only doing it to preserve their national secrets, and the Nazi assassin Dr. Hartz even goes so far as to cheerfully wish the heroes good luck after they escape him.