Audio problem: If it is raining, like in the Halloween event or other random storms in the game's time cycle, the audio can change in structures you're inside. But the rain follows the rules as well, like if you're in a tunnel, the rain doesn't fall inside the tunnel. However, if you get inside a bus that is in that tunnel, suddenly you'll hear the sound of rain hitting the roof of the bus, despite there not being any rain that can hit it.
Continuity mistake: The game has a regular day cycle shifting from night to day and back over a length of time. If you go into some buildings like Quarantine Zones, for example, the Stuffed Turtle mission, the windows on the inside of the building will always show daylight shining through. Even if you go into the Quarantine Zone mission while it's night outside.
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