If multiple physbone components are using the same collider, only one of the physbones components' collision checks will be counted in stats. This will usually be the earliest one in the hierarchy. The collision still works fine ingame, just it isn't represented in the stats. This applies both in the sdk and ingame.

This can be easily reproduced with the Avatar Dynamics Robot Avatar scene with these steps.

4.- You can also upload the avatar and see that it's still reporting only 36 collision checks despite it having more.

Here's a video of me reproducing the issue in a blank project with the newest sdk: https://streamable.com/chskys