Continuity mistake: This is the scene where Miles, Stephanie and her mother are sitting at the table in the bowling alley. Stephanie's mom is smoking a cigarette; the scene cuts to Miles and back to Stephanie's mom. She is now holding an unlit cigarette in one hand and a lighter in the other about to light the cigarette. It once again cuts to Miles and you can see the smoke coming from her cigarette and Miles begins to cough.
Continuity mistake: When Jack first meets Maya and they are all having a drink at the bar, Maya is holding a cigarette. We can see she is holding the cigarette up near her face when the camera shows her from behind but is all of a sudden holding it near the bar counter in shots of her face. This continues until about halfway through the scene.