I don’t know if this is the right place to post bugs about the babylonjs.com site itself but on the shader subdomain https://cyos.babylonjs.com/ when you download a file as a zip the babylon.js file it points to in the index.html file is http://www.babylonjs.com/babylon.js which returns a 404 error, same with the other link that is in that file.
EDIT: also why is the API page for the ShaderMaterial missing everything? ShaderMaterial - Babylon.js Documentation
Second EDIT: Oh, lol you forgot to escape the chevrons in the script tag and it treated the entire rest of the page as a script.