Steps to reproduce:
1. Open attached project
2. Open "_root" scene
3. Enter play mode
4. Click on Game View and hover over the Button
5. Try to click button - no response
6. Press ESC to unlock cursor
7. Click on the button - button responds
8. Alternatively insert Debug.Log(pointerEventData.pointerEnter); in CommonVRReticleInputSystem.cs above line 46 and repeat the steps

Expected result: PointerEventData.pointEnter isn't null when hovering over Button when Cursor.lockState = CursorLockMode.Locked
Actual result: PointerEventData.pointEnter is null when hovering over Button when Cursor.lockState = CursorLockMode.Locked

Reproducible with: 5.5.0b1, 5.5.0p4, 5.6.0b4