I've created a blank project and a single task in the plan... no resources assigned, no predecessors, no nothing. The task has a one day duration but finishes on the day following the task start date.
I've tried adjusting the working time in the Options> Schedule... i've tried changing the scheduling type... I've tried associating the Standard Calendar with the task. Nothing I do will make my task finish on the same day it starts.... what am I missing?

