Try to use the button prefab "NearFieldButton" from the new oculus
integration V12.0 package. Problem is the "Interactable State
Changed(InteractableStateArgs)" in Button Control panel can be triggered
by all three collider zones(Proximity, Contact, ...
@kersk After updated Oculus Integration to V23. I got this error
"Multiple plugins with the same name 'ovrplugin'..." I am using
Unity2019.4.14. Thanks for the answer, it works for me. However it seems
the problem still exist.