When Will pours Nicky's milk near the end, he fills it halfway. Then the girl knocks on the back door, it's almost full.
When Nicky picks up the newspaper, the creased side points down. In the next shot, it points up. When Will takes it from him, it points down again.
Ashley and Nicky get up from the couch and start to walk to the viewer's left. The next shot shows the viewer's left corner of the couch and Ashley and Nicky are not visible, and not enough time passed for them to have left the room.