Toggle between HMDLocomotionPawn and FirstPersonCharacter ?

Here is my real problem:

My ‘FirstPersonCharacter’ works fine in Preview: Selected Viewport
but when I posses the HMDLocomotionpawn the camera stops functioning(movement is fine)

My ‘HMDLocomotionPawn’ works fine in Preview: VR Preview
but when I posses the ‘FirstPersonCharacter’ the camera stops functioning (movement is fine)