Original description: I can't connect to my own server, it just crashes after a few seconds. This makes the server impossible to play on, this is a critical bug.

Server auth with rewind causes clients to crash.

Expected results:
Server auth with rewind will not make clients crash when moving in the server.

Observed results:
It caused clients connecting to the server to crash

Notes:
As a workaround you can use client auth movement instead, since I experience no issues with it.