when ARPlaneManager in ARFoundation is disabled, scene drifts

This is issue is for iOS only.

In my app I show the user planes that generate, or some other use of planes - I'm happy to spawn the planes.

When the user is happy with the plane, they spawn an object on the plane.

From here I don't need the Plane Manager anymore, so I use enabled = false to turn it off.

Turning it off causes the entire scene to drift for a few seconds, then it snaps back to the original position.

Any clues to stop this drifting from happening? Anyone else having this issue?

On Android this doesn't happen.

 

https://forum.unity.com/threads/arfoundation-place-on-plane-unstable.568270/#post-3844537

 

It seems to be a different issue, the ARKit session is paused when plane detection is disabled. A fix is in the works though!

https://issuetracker.unity3d.com/is...on-momentarily-causes-unstable-world-tracking