I am using my own private server, it has 2 mods in it, one for the signs and dynamic scavenging.
The issue is that when trying to use a vehicle the camera breaks and points at the sky.

I have to relog to fix but repeats with testing.
Turned off headbob and changed the 3rdperson settings in an effort to test for fixes with no luck.
plugged in a controller. Now instead of looking at the sky the game client just freezes and I have to crash it to desktop to fix.
this is also repeatable.