I played this morning (6/13/20) and everything went fine. I left for a few hours and came back to the grayed out world icons. The date next to the world I played this morning now says 6/9/20, the last time I played on the world. Whenever I try to startup any world I get the message showing me the data isn't synced. I've restarted the game, uninstalled the game, reset my Xbox, and factory reset my Xbox, and nothing has worked.
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Thank you for your report!
We're actually already tracking this issue at MCPE-40552, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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