As she is called to the phone by the PA, Jane's shirt changes from shot to shot. At the bar, Chiaro looks at his full glass, says he needs a refill, and departs.
Although it was nighttime minutes earlier, when Jane leaves Chiaro's room it is broad daylight outside.
During car chase, backshots out of the car window change to radically different locations.
Jane throws her earring/shuriken directly at Koch as he faces her, but when the camera cuts to a new shot it hits him in the side of the neck.
When Jane spits at Igor, the spittle clearly only falls a few inches, but the next shot has him being hit by it from several feet away.
The number "6" on the hotel room has noticeably been cut from a piece of paper and taped to the door.
As Jane breaks into Chiaro's room, it is clear she is in fact in the room and trying to open the door out to the hallway.
During Jane's "high speed" car chase, the backshot shows her passing other cars at normal speed.
Jane's kitchen is the same room as Chiaro's room seen earlier.
As Jane opens the notebook to "Igor Stotsky," a man's hand is used for the inset shot.
While the name of Chesty Morgan's character is often reported to be "Jane Monet" or "Jane Genet", it is clearly pronounced "Tennay" in the film.
While Jane is recovering, she attacks the nurse, the person being strangled is clearly older than the nurse from the previous shots.