There was a bug where using Oculus Linked relied on the pointerPosition mapping for the controller's pose. Reading the changelog it appears that it was added for Windows Mixed Reality. See changelog.
What I did was to change pointerPosition to devicePosition and pointerRotation to deviceRotation for the first fallback. The file this is changed in is XRI Default Input Actions.
In the future, this may cause a bug as the default control mapping is changed. Created this issue as a reminder that the changes took place and the reason behind it.