bkb2024 hi!
If you check the demo scenes, you will see that the tutorial is able to follow moving objects, it's not keeping any position in memory:
![Image description](https://support.exoa.fr/assets/files/2024-10-02/1727840480-844942-test.gif)
So my guess is that you are not tracking the right object, you are maybe tracking a parent object than the object moving with the rigidbody. Can you check from the game view, that the target object location is on really the character?
If you can't find the issue, would you be able to send me a sample project?