The game has had issues with crashing in the past, but since bedrock 1.13, I’ve been experiencing even more crashes than usual. Sometimes there’s some type of pattern like like sleeping while autosaving or when the game is trying to save and quit, but other times it just crashes randomly. Also, it seems that when these errors occur, it isn’t uncommon for certain entities to despawn, despite the fact that they shouldn’t be able to. Prior to bedrock 1.13 I lost 2 turtles named dinnerbone, 2 horses (both with diamond armor that didn’t drop), a pig with a saddle, a parrot, and a villager. Since 1.13 I’ve lost at least 4 villagers and at least one mooshroom (the mooshrooms aren’t a big deal, but still.) The villagers also couldn’t’ve been killed as I keep them on a mushroom island and behind large walls for good measure, plus only a few died, not all of them. Also, hostile mobs keep spawning on the mushroom island, but that’s unrelated.