Camera's do not move or rotate relative to the portal

[DacodaDragon]

Unwanted behavior can be seen by rotating one of the portals so their rotation doesn't equal each other.

[doztep]

After hours of investigating same issue, I found a solution here: https://answers.unity.com/questions/1118179/portals-transform-rotation-of-ported-objects.html

With following method you can rotate both portal without any problem.
public void setCameraTransform() {
portalCamera.transform.position = otherPortal.transform.TransformPoint(portal.transform.InverseTransformPoint(playerCamera.transform.position));
portalCamera.transform.rotation = otherPortal.transform.rotation * Quaternion.Inverse(portal.transform.rotation) * playerCamera.transform.rotation;
}

with portal1 = portal, portal2 = otherPortal