I seem to have forgotten something essential: I try to move two objects to the same spot. They cannot be “chained” so that the trolley drags the “box” since the two will back away from their common point at different times.
Fig 1. Starting position:
Fig 2. Two objects racing to the same target position (they should move at exactly the same speed), and trolley “wins” (perhaps due to less friction in the wheels, or something… ):
Fig 3. Target position reached. Only here the trolley and the box are eventually in sync:
Fig 4. Trolley backing away from the box, which is also why their respective animation keyframes must be separated:
How can I fix this? I have tried unchecking 3D Tweening, and also the “ease” properties for the two objects, but they still disobediently ignore any attempts to sync and instead arrogantly move in their own respective pace.