Hello [mention removed]
Thank you for the repro project.
I’ve run it through Perforce’s UE5.7 CL42031367.
I was able to confirm that the issue was fixed and the behavior was as expected:
[Image Removed]All cubes remained sleeping during the simulation (except for the top/child cube on CubeUnwelded, which was marked as Kinematic, as expected):
[Image Removed]Let me know if you need anything else.
All the best,
[mention removed]