I am aware of the bug that causes you to spawn in as a spectator and I'm working on it, but I haven't found what causes it yet. I'm not sure why you weren't able to open doors or elevators, I haven't ran into that bug while testing the game, so it could be because of the connection to the server since the virtual machine hosting the server kept timing out when trying to connect to it today.
Edit: The bug has been fixed in version 0.1.1 (Issue: the player was not being teleported on the server in time, which means if an SCP was not moving from the location that it killed you then you have a chance of getting killed right after you spawn in)