My Microsoft realm keeps reverting to a point in time at each log in. After working in the realm for some time on Windows 10, I logged out. After logging back in some time later only some of the work was completed.

After modifying more of the terrain I logged out again. I immediately logged back in after an idle disconnect and everything looked to have been saved. I logged back out again.

30 minutes later my son logged in on the xbox1 and the realm reverted to the same point I had previously observed, and all of the new terrain edits were missing again. This only started happening after the 1.13 update to the realm.