In the current version of the built-in Oculus Internet browser, scrolling with the touchpad seems to have been inverted on both the VR controller and headset touchpad. I'm using the S7 Exynos Nougat with 2017 headset. Normally, using the touchpad is like dragging your finger, so moving bottom-up scrolls down. Instead, this causes the browser to scroll up.
S7 Exynos Nougat. 2017 Gear VR. Public test channel.