That's weird. You're the first one to experience this issue, because lots of other users using New3DS and Luma on 11.2 didn't have this error during tests. Are you sure to exit correctly? If you exit from the app using START you'll save your progresses and then you should have everything okay in your save. Exiting with B will also exit correctly from the app, but it will not save any progress. Just don't exit with Home button.Still seems to hang for me sadly.
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