Realms does not save previous work

Any building I work on or create does not save when I log on the next day. Upon playing the Realm it puts me back to where I was before with hours of creation gone as if I never did anything. I have tried to build one thing or even just one block, disconnect and quit game, restart, but the same thing happens that one block is gone as if never placed. Never had this issue before this latest release. Something is very wrong with it.