Are you referring to the issue you've posted about previously? I'm not familiar with how popular these servers tagged "official" are, or how they are being operated, but my best guess is that they are using the latest release of the dedicated server software, which is still under development. From my observations, public servers with a handful of players connecting each day tend to have issues with save files being corrupted, or other problems which lead to crashes. This is to be expected at this stage in the software's development, as optimization and polishing is usually the last stage before release of any software, games included. Being that Ylands is still a game in development, our job as players is to provide as much constructive feedback as possible in order to help the developers improve the quality of the game.
Some good news, however, is that the Ylands Team has been rolling out more updates to the server software in the past week, so we may see some improvements in stability. If you do continue to notice issues with save corruption, or anything else for that matter, please share constructive feedback about it here on the forum. By contributing in this fashion, we'll help make Ylands the best it can possibly be.