Storyline 360 drag-and-drop issue: object moves away from cursor after state change

Thierry's diagnosis nails it: the object's hit box stays at the Drop Correct size (328 px tall) even after the visible state switches back to Normal, so the cursor offset is computed against a bounding box the learner can't see. Since there's no native "reset drag anchor" and no supported JS hook for it, the reliable fix is to stop reusing one object for both jobs: keep the small Normal-sized object as the only draggable, and put the big installed visual on a separate non-draggable object underneath it. The learner always grabs the small proxy sitting on top of the big visual, so the anchor math never changes and there's no jump. State changes then only swap the visual underneath, never the dragged object itself.