Only Cube animations are availabled, others are empties. When dragging the glb file into sandbox we can play every animations, so it's not from BJS or .glb
Not related to the runtime, same result with BABYLON.SceneLoader, only the sandbox has the desired behavior and I don't think we should try to fix this
See this scene: https://codesandbox.io/s/github/Vinc3r/codesandbox-project/tree/master/BabylonJS/_runtime/git-reports/animationGroups?fontsize=14&hidenavigation=1&theme=dark
Only Cube animations are availabled, others are empties. When dragging the glb file into sandbox we can play every animations, so it's not from BJS or .glb