@SirGreenDay: I have merged your topic here.
I do not believe this is an issue/bug, but meant to be open by default. Many players will likely use an existing save allowing them to power the base. It would be awkward to then right away find yourself with closed doors as soon as you add power.
You can run a power line directly to the door, which will then close it. More advanced systems with switches or detection is also possible. You may find some solutions in this topic (like the video posted above) or possibly in the topic linked below: