When Milo is speaking at his daughters birthday party, the type of glass he is holding changes twice.
When Milo and Radovan are taking care of the first body, Radovan slits the man's throat as he hangs upside down from the ceiling. A bucket that has been placed beneath him fills with the man's blood, and Radovan instructs Milo to empty it and bring it back. When he picks up the bucket, the plastic underneath it is covered with blood. However, when he brings the empty bucket back and replaces it beneath the man, the plastic covering is clean. After Radovan eviscerates the man, and Milo once again removes the bucket, the plastic is again covered in blood.