Responses
The bag is in front of Ian's bedroom door. That's why he couldn't get out of his room... except he climbed out the window. There's nothing blocking the front door to their apartment. We know this because that's the door his father left through. They decided to climb back into Ian's room through the window versus just opening the front door and then moving the bag in front of Ian's bedroom door.
Does Ian not have keys for his own damn house? How are they still locked in? Adorable idiots.