When I'm asleep. They spawn in my cobblestone house with n reason. I also have a easy, trap drawbridge that I open up at night in front of my house (there is a long hallway to get in; it is in there) and I keep it open. How is this happening?
Try moving your bed first then if it still happens then remove your double doors. Same thing happened to me and I had double doors so I moved my bed and it stopped happening and I got to keep my double doors
Monsters in Home