It looks like a Bug: this house has doors on place between the windows. Right after i logged in, i saw them. But when I came back later they disappeared. I can’t go through the openings so I guess They are still there. Also didn’t see another player being there removing them.
The house completely is inside beacons from another player (if that could be a reason for disappearing).
I just changed a bit day time and blended out / and in my interface for screenshots while I was online. When I cam back later here, the doors disappeared.
I logged into the game again and they appeared again. I tested what I did before (made screenshots, changed daytime and toggled on/off interface. But they stayed. Maybe it’s a graphic loading bug? Because before I went more far away so the house was out of sight. And when I came back to the house (an the house loaded again to appear), the doors didn’t appear.