Who is wrongly parked?

You are correct: only the white car is wrongly parked. In Germany, the area marked with a zigzag line and the large "BUS" lettering is reserved exclusively for buses at a bus stop. Stopping or parking in this zone is not allowed for regular vehicles, as it blocks bus access and endangers passengers. The dark-coloured car is parked outside this reserved area, so it is allowed to park there. Remember: never park in bus stop zones or any area marked with special symbols or zigzag lines, even temporarily.