Continuity mistake: After escaping interrogation Bourne switches SIM cards and throws the phone back down with it facing down. When we see the American awake the phone is now facing upwards. (00:30:10)
Continuity mistake: When Bourne pushes Ward's head to the table and says, "I told you people to leave us alone.", you can see Ward's glasses. Two shots later his glasses suddenly disappear. (01:12:45)
Continuity mistake: The blue Saab convertible belonging to the Berlin-based assassin is parked with all wheels on the road when the call-in team arrives in a silver 4x4. Shortly afterwards, the same car parked almost completely on the sidewalk when the assassin's house explodes. (00:41:50)
Chosen answer: While it's not explicitly spelled out, it's suggested that he was suspicious from the moment he entered the house (which is why he quickly goes for the gun in the fridge), so what he entered on the alarm keypad when he came in was not a disarm code, but was instead some sort of emergency code which called for backup.
Tailkinker ★