BEFORE YOU YOU RESOLVE THIS, THIS IS 100% NOT MCPE-21416. This glitch started happening as soon I updated to 1.17.30. Basically I noticed that all my villagers had disappeared. Then I noticed my snow golems in my slime farm had disappeared and then all my tamed pets. I did some research and thought the glitch I was getting was MCPE-21416 but most of my villagers where not on a chunk border. I did some more testing and using websites like chunkbase I worked out where chunks were in my world and positioned all my important entities inside it. However upon saving and rejoining the game they were gone. Every time I tame a new wolf I leave, make a copy of the world for backup, and rejoin, they will all be gone. This glitch is really annoying and is making me lose motivation in my world. I also know it is not MCPE-21415 because it doesn’t happen on regular auto saved or leaving and rejoining. It only happens when I leave make a copy and rejoin. I have before and after pictures because I was recording while the glitch occurred. As you can see all my villagers and pretty much all my dogs disappeared and they were all dispersed randomly not on chunk borders.