Odd, worked OK on my Nexus 4. But it seems the parallax is reversed when the phone is in portrait move - when I tilt the phone to look behind the lighthouse, t

Odd, worked OK on my Nexus 4. But it seems the parallax is reversed when the phone is in portrait move - when I tilt the phone to look behind the lighthouse, the background moves the wrong way. It moves the opposite way when in landscape mode. Somewhat disconcerting.