Minecraft BE Realm Rollback

I also have the same issue. I believe it is because of corrupted chunks from a big world. Mojang should fix this because if it is a forever world (like my realm 3000 days), it is a hassle to deal with. One temporary fix I found while doing it is that whenever the realm kicks you it will save to the most recent save in automatic section of the realms. You can reset back to where you were.

For the bug report. The bug is often, it resets the world back to the older save of the world instead of saving, crashing, then using the newest save. If players crashed the realm another way you can manually reset it back. It shouldn't auto reset backwards incase of a bug like this.

Another hypothetical fix is to reset corrupted chunks. It might be a little bit destructive but it is better than getting kicked out every 30 minutes. Also if I am not playing and another player is then they get kicked out and it resets their progress. I can’t reset it back because I wouldn't be on.