Our realm is acting up in the sense that we can be doing a few things and get some game progress in and log out after an hour, come back 10 mins later and the world goes back to when we haven't done anything for the course of us playing for that hour! Is it something to do with the update or just what cause this never happened before.
This appears to be a duplicate of REALMS-4224, which hasn't yet been resolved. If you have any additional information to provide regarding this issue, feel free to comment on the parent ticket. If you feel that this issue is affecting you, feel free to vote for the duplicated ticket, to give Mojang a basic idea of how many people are impacted by the problem. Just to further inform you, this will not determine how quickly the bug gets handled or fixed.