Hello,
I have an issue with a custom rig i have at the moment, when u rotate ur camera in first person the body of the rig doesn’t move with the camera. But it does move when u hold right click.
I want to know why this happens and if there are any solutions to it. Thanks 
for Roblox to actual rotate the character the camera mode needs to be set to LockFirstPerson. But if your using a custom controller then it would be as easy as setting the Y axis of the cframe of the humanoid root part to the y rotation of the camera. at least i think it should be that. might not be the Y axis.