Whenever my computer shuts down due to low battery, therefore, making it shut down suddenly and without saving, it corrupts the world when I log back into the same world. What I mean by this is that the chunks get swapped around near where I was. For example, this has happened twice so far, in which my house has been separated from itself and some of its parts, that were once connected, are now a couple chunks away. Other than my house, I traveled a couple hundred blocks away from where I was and saw some weird hole and mountains that are in chunks (i.e. they are in the shape of cubes that were once chunks located in another place).