Random blocks (dirt, stone grass) spawn in random places of woodland mansions

I was exploring a woodland mansion today and on the bottom floor of the mansion I would find random blocks (dirt, grass, and stone) almost as if the game forgot to delete them when spawning the mansion. The blocks would usually spawn in the middle of said room but in two of the rooms the random block was lodged into the actual structure. I had experimented with this same mansion on 1.19.83 two days before and there were no random blocks.