I’m having some weird issues with the first-person camera, when standing on phyics enabled objects.
The setup is very simple. I have a big static mesh cube and a smaller static mesh pillar. Both are moveable and have collision enabled. I connect both with a physics constraint that limits all motion or rotation (I basically glue them together).
In the first video below, the pillar mesh is very long. The big cube mesh has its physics disabled, so that it can support the long pillar. As you can see in the video, standing or walking on the middle of the pillar makes the camera vibrate and jitter randomly. This doesn’t seem to happen on the two ends of the pillar or with shorter pillars.
You probably should play this video in HD and full screen to see the jittering: