Random blocks keep spawning on our realms server. Blocks spawn blocking door ways, on tracks, and all over our created world. I have to constantly break random blocks that form across our walkways three high and four wide. The blocks that are randomly appearing are not blocks that were once in that spot. Today deep slate blocks are covering all over the surface. Blocks are disappearing from created walls. Mine are despawning. We created a new village with villagers. Put strict security on the town. We had a striving village and we came back on and the entire village is empty.