[Godot 4.3 Stable] Demonstration of broken BoneAttachment3D
BoneAttachment3Ds are broken initially, but easily fixed upon any slight update to bone pose. In video it's demonstrated by toggling 'Show rest only' property & by rotating one bone. Or just use reset_bone_poses().
Seems like there's no initial update trigger or something when added.
Issue: https://github.com/godotengine/godot/...