My friends and I have been playing the 1.16 update on Java edition on our realms server for the past few days. Realms works fine, except we have noticed some saving difficulties when we log out. When everyone logs out of the server and we log back in, we lose a certain amount of progress. It seems that the server is not backing up once we leave and is just resetting to the nearest backup. 

At first we thought it was an issue on our side and that maybe it wasn't saving properly because our internet goes out at a certain time, but the first time I noticed this issue was when I logged out of the realm, still had the game open, and came back a few minutes later. I'd lost a couple minutes of progress in the game, but since I hadn't closed out the game I still had all the chat logs which were the same. 

The issue itself is at most a minor annoyance, since I only seem to be losing a couple minutes of progress, but knowing that when I log in some of the items I got before logging out or even my location might be different is a bit worrying, since I always try to log out in a safe place. Thank you for taking the time to look at this issue. I'm not sure if anyone else seems to be experiencing or noticing the issue, since it is rather small, but it would still be nice to know why it is happening.