Is it normal for toddlers/preschoolers to go through an concern with details/OCD phase?

My 2 1/2 year old does the door thing too. He has watched us close doors so many times, he figures that is what you do with an open door. It's kind of irritating when I am trying to get something out of the bottom drawer in the refrigerator and he wanders over and shuts the door on my head or when I am trying to load the dishwasher and he closes it after every dish, but I figure it's a phase.