The solution is to create some calls on the case of line 787 of SteamVRHMD.cpp (case vr::VREvent_TrackedDeviceUserInteractionEnded:) at least was that on 4.13
You must follow the delegates as in FCoreDelegates::ApplicationHasEnteredForegroundDelegate.Broadcast();, I have created a Broadcast to a VRNotificationComponent.
Just realize that I lost the modifications on a old version (4.12), so I will need to build it again hahaha.
If you have too much trouble please let me know.
Kind regards,