Since today's update, I can't switch to first person view anymore.
As I saw that C-key is now used for construction mode too, I've managed to change my shortcuts so that there is no conflict. It still doesn't work.
PS : I also experience hit radius and logs in floor issues.
If you want all players to be in first person by default, just put a custom camera on your map (set to FPS):
If you want something more complicated, please just let us know and we can talk through how to set it up