Physics is very broken for me in Unity6.0.5f on Windows11
With AnticulationBody specifically.
* Convex MeshColliders no longer work
I upgraded from Unity 2022.3 which was working perfectly.
The best you can do is submit a bug repro with a simple scene reproducing the issue, so Unity devs could take a good look at it.
For now Unity 2023.2 works and supports Windows for ARM64 builds.
You should still do a bug report. Nothing gets fixed based on forum posts.