Node material editor examples broken?

Questions
1

https://nme.babylonjs.com/#EPY8BV#6

I think several PBR examples are broken bc I’m just seeing a black screen where the render should be

2

I do see something:
image

Maybe try cleaning the cache of your browser.

3

see it in firefox, but not chrome; cleared the chrome cache, no dice, also no errors in the console…?

4

It does also work for me in Firefox:
image