Vuforia 7.2: How to calculate position and rotation of multi target in relation to camera

We used Vuforia 7.0.47 so far. In this version, the relative position and rotation of a multi-target (e.g. a cube) towards the camera could be directly derived from the target's transform. This worked with and without positional tracking.

Since Vuforia 7.2, however, this only works if device tracking is either off or set to "rotational". As soon as we set it to "positional", the position and rotation of the multi-target's transform do not reflect the relative position and relation to the camera any more.

Since we need positional tracking, we would like to know how we can still get the relative position and rotation of a multi-target towards the camera in "positional" mode in this new version?