I have between 20-30 villagers, all have workstations and their own beds with no pathfinding issues. All are grouped into separate areas (1-4 villagers per area) with doors in between the beds and workstations. There is no more than ten blocks between the beds and workstations and no vertical paths in each area. However, whenever I load the game and night falls I have four villagers that reallocate their beds between my bed and their's. I wait for night to fall, break all the beds involved and replace till all are asleep. Everything is well until I quit the game. I always use the save and exit button and close the game before shutting down the console. I discovered the issue occurs on reload when I placed multiple beds in one area where two of the villagers are. I watched them get into their claimed beds and sleep. Then, I saved and quit, reopened and they were sleeping in different beds. I have also had them all sleeping with no extra beds, exited, reloaded, and they were all awake again looking for the beds they relinked to. I have tried putting the beds in different positions. The four villagers involved entered the world at different times, meaning one was probably my 8th villager, the next 15th, and the other two close to the last additions. All of them retain their workstations and trades.