The world is broken

We signed into our realms and where me and my friends have built houses etc the chunks have all corrupted, leaving us with barely any space to play. It was fine earlier in the day but since the last update it has wiped progress and items from a couple of hours ago. We are very sad because we enjoy playing this game together.

https://gyazo.com/897cf8d30da6805ea12871a10b21bfb3