ERROR: FATAL when adding a new SkeletonProfileHumanoid

[lviardcretat]

Tested versions

v4.2.1.stable.official [b09f793]

System information

Windows 11 Pro - 23H2 - AtlasOS - Vulkan API 1.3.277

Issue description

Godot crash when I want to add a new SkeletonProfileHumanoid :
ERROR: FATAL: Index p_index = 2 is out of bounds (size() = 2).
at: get (./core/templates/cowdata.h:158)

Steps to reproduce

1. Download the gltf model here : https://sketchfab.com/3d-models/curious-skeleton-757d9863b3504a75a439b2b99a530454#download
2. Add it to the project folder
3. In Godot, select the "scene.gltf" and click on the "Advecement..." button in the import tab
4. Select the Skeleton3D and add a new BoneMap
5. Add a new SkeletonProfileHumanoid to the BoneMap
   

Minimal reproduction project (MRP)

game.zip

[SaracenOne]

Found an error, but couldn't reproduce the crash itself. Can anyone confirm this still causes a crash?