EventSystem.RaycastAll doesn't work in Oculus Gear VR?

I just recently updated the Unity to 5.4, and using the native Unity VR mode, I didn’t implement the Oculus Utility.

eventSystem.RaycastAll worked in previous version, but once I updated to this version, this function doesn’t work at all in Oculus. There are totally no UI interaction in oculus.
m_RaycastResultCache is always empty, count 0.
How to solve this?

It still works on normal android and ios, only Oculus Gear VR has this issue.

It’s solved by using VRSetting.eyeTextureWidth.

It’s not in the release notes.