Door won't close. Stuck open even though its powered

[DevilinPixy]

@SirGreenDay: I merged your question with an existing topic. You can find a direct link to the new location below:

Electricity and Piping 101

The door to my main building on my base stays open. It won’t close. My base is fully powered, so I’m not sure what’s going on. I don’t need to run a dedicated power line to the door do I? I’m hoping it’s just a bug, but I wanted to make sure.