Logged into my Solo World and all my stuff was missing. Empty inventory, empty chests, even my furnaces were empty.

Wish I knew how to replicate it but I don't. Literally loaded the world up and everything was gone.

Only idea I had is that switching from the Realm to my Solo World might've done something somehow but I've checked other people in the Realm and their Solo Worlds are fine it might possibly be an account issue?