Continuity mistake: As Jack presents Joan with the necklace when they are seated at dinner during the festival scene, the one he is holding in his hand is a beaded necklace, to attract more light for the further camera shot, only when the close up of the table occurs it is a completely different necklace.
Continuity mistake: When Joan is looking for paper tissue to wipe off the tears she sheds over her own book she finally blows her nose with a note stuck to the mirror, saying "Don't forget - buy tissue". The note was stuck on the left side of the mirror, but when she grabs it in close-up it's stuck in the middle.
Continuity mistake: Right after the bus crash and shootout at the beginning of the movie, it starts to pour with rain and Jack and Joan are walking along the dirt road. The road gives way and Jack and Joan fall down a slope. They end up in a muddy pool and as Jack comes up for air (between Joan's thighs), you can see his wet hair is plastered forward over his ears in one shot and in the next shot it has been pushed neatly back behind his ears - this sequence is repeated a couple of times.
Continuity mistake: When Joan and Jack arrive in the town, Danny De Vito is on the public phone to his cousin, Ira, and when he sees Jack and Joan, he says "You are the luckiest son of a bitch; she's coming right toward the phone booth," but he says this before Jack and Joan have even seen the phone booth, let alone walked towards it.
Continuity mistake: When Joan's bus crashes, the film editing becomes chaotic: suitcases on the roof fall in one shot, then remain in place on the other; the stuff on the ground keeps appearing/disappearing randomly, and Joan's blue suitcase swaps from laying horizontally to diagonally.