If you don't have the correct mod loadout and try to connect to a server on which you have baubles, once you update and reconnect, all the baubles are gone.

I'm guessing this has something to do with not getting as far as loading the baubles for a player, but then saving their now empty inventory when disconnecting.

It's happened 3 times to me on Forgecraft 2 now, and a couple other players too. Each time was immediately after a rejected connection for incorrect mods.

Apologies for the lack of concrete information, it's happened over the space of a few weeks.

Hmmm, I'll take a look.

This should be solved in the next major release.