Going into 3rd Person, invoking "Immobilize" from VRC Animator Locomotion Control, then pressing tab to free-rotate the camera, then pressing tab again causes a multitude of unusual behaviours. The first time tab is pressed, the camera unlocks and you can rotate around your avatar normally. The second time tab is pressed, the avatar's head snaps to the direction you were looking in (correctly) but its body does not , instead remains pointing the same way it did before Pressing tab a third time causes the avatar's head to snap to the direction your camera was facing, plus the difference between the current rotation and the last time you hit tab . The body still remains unmoved. Continuously pressing tab causes these rotations to add up and your avatars head to snap to seemingly random directions, until Immobilize is disabled. Other actions that cause the head to start following the camera's direction, such as exiting third person (by scrolling all the way up, pressing F5, etc) have a similar effect to pressing tab here. In addition to Immobilize locking one axis of the camera, this now also makes your avatar look like it has its head screwed on backwards.