@Psyber Unfortunately I don't wuite understand what the video is trying to show. The SkeletonAnimation
setting Physics Inheritance
determines how much GameObject Transform movement is forwarded to the skeleton. I see no GameObject Transform movement in the video though.
You are saying you're using the latest Spine Editor and spine-unity runtime version, but I doubt that you mean 4.3-beta. Do you mean Spine Editor version 4.2.43 and spine-unity runtime version package 2025-05-16 (version 4.2.106 in the Unity Package Manager)?