Hello,
I recently purchased your "City Has Fallen V1.1 - Kaho" prefab pack and used it in a Rust custom map via RustEdit. After placing several of the prefabs, I noticed multiple errors in the Rust console such as:
BoxCollider does not support negative scale or size.
The effective box size has been forced positive and is likely to give unexpected collision geometry.
If you absolutely need to use negative scaling you can use the convex MeshCollider. Scene hierarchy path ":\City Has Fallen V1.1 - Kaho:553872:/assets/bundled/prefabs/modding/cubes/tiled/cube_tiled_concrete_08.prefab"
Thank you for your time, and I look forward to any fix or update you can offer.