If you rejoined the same server, you probably just joined too early. You should wait at least 2 minutes for the server to restart and initialise before rejoining.

Hello Comrad,

Thank you for sending us your feedback regarding this issue. Unfortunately, this problem is a known issue that has previously been reported. The devs are aware of the problem related to character save loss and they'll be working on fixing it.

Closing as duplicate of #78.

Regards,
JStewart