@MojangSupport I play on a realms server and today I spent a large amount of time building. I log on again a few hours later and all of my stuff was reset, and it took forever to log on, and now all of it is reset.

Sorry to hear that happened! Is this still happening to you at this time? ^TK

No, but I lost all of my max level enchantment villagers. The backups on the server where not working for a while, but started working this morning. The realms owner had to manually back it up every so often