Using Unity 2018.2 with Vuforia 7.2, ARCore 1.4 (fusion) enabled and Stereo eyeware.
Initially ground detection and tracking works perfectly, then we detect and track a multi-target cuboid and that works fine as well,position and rotation. But, when we stop using the multi target element and go back to the ground surface, the tracking fails and drifts.
Here is a video to better expain the issue:
Maybe there is an anchor that is created automatically when the multitarget object is detected and being tracked, and after using it, that affects the ground/device tracking? Or something like that.. Any workarounds?