How do I change the texture of my face-locked stereo layer?

I am trying to make the texture of my stereo layer change as the player looks at particular objects. To do this, I am using the set texture node on my stereo layer within the event graph of my camera actor. My stereo layer is the child of my camera actor. However, the stereo layer is not updating with the new texture while using a face-locked stereo layer. The layer only updates when I use the world locked stereo layer type.

Is this a bug or I am going about this the wrong way?

I have included my settings in the attached images.