Hey,
If you’re having problems with your GLTF/GLB import, like meshes disappearing when you move or in-game, or not being able to click on a mesh, etc., the problem is simple. Uninstall GLTFast and reinstall it directly from GitHub. When you install it with the name “com.unity.cloud.gltfast,” you might encounter issues. I don’t know why, but just install it from GitHub.
Here’s the link: GitHub - atteneder/glTFast: Efficient glTF 3D import / export package for Unity
I spent 5 hours trying to resolve this issue…
I hope this helps someone.
Shikorin.