Because the robot’s vision navigation maps in 10 to 15 foot segments at a time. It may not finish an entire room before moving onto the next one (especially if the the room is large). With its multi-room cleaning functionality Neato will actively seek out other spaces and rooms to clean. Neato keeps track of what it has and hasn’t cleaned, and will return to the first room to finish the job and recharge.
If the issue persists, please click on the blue Chat icon for assistance or visit our Customer Care contact page for more options.