Chrome: 67.0.3387.0
VRCore: 1.13.185188193
Android N, O
Device: S8+, Pixel 2, etc.

* This repros every time.

What steps will reproduce the problem?
(1) go to m.youtube.com
(2) enter Chrome VR
(3) select video to play, and click fullscreen button
(4) let the controls hide, then hover over the bottom of the video to make them reappear.
(5) Move controller pointer off the video.

What is the expected result? The video controls hide after a second or two.

What happens instead? The video controls stay on the player unless a button is pressed on them.