Truncate the physical squares, or make the rope connecting them disappear.

[oceanst1]

Drivebywire-0.2.6 and aeronautics create-aeronautics-bundled-1.21.1-1.1.3 have bugs. Breaking a physicalized box connected by ropes into two pieces will make the ropes disappear.

[oceanst1]

I tested it again, and it should be said that this bug will make the physical behavior break the rope.