ARView perspective camera not working in iOS18 Beta

Have some older code running an ARView in .nonAR mode with a perspective camera that is moved around. It seem if running this on an iPhone with iOS18 Beta or iOS18.1 beta it ignores the camera and the view looks incorrect.

Specifically I'm doing

private let camera = PerspectiveCamera()

    camera.camera.fieldOfViewInDegrees = cameraFieldOfVewInDegrees
    let cameraAnchor = AnchorEntity(world: .zero)
    cameraAnchor.addChild(camera)
    arView?.scene.addAnchor(cameraAnchor)
ARView perspective camera not working in iOS18 Beta
 
 
Q