I think Chrome has changed its behaviour... I'm aware of this problem but I haven't figured out what is it that started failing.
If you update the demo to a newer three.js it should work again though.
Question
I have this small demo with Three.js, that stopped working suddenly for Chrome (but works for Firefox), which is weird because I am using the same version of the library as before (r47), so new changes in Three.js shouldnt affect my demo.
Has Chrome changed his behaviour or introduced bugs with WebGL?
La solution
I think Chrome has changed its behaviour... I'm aware of this problem but I haven't figured out what is it that started failing.
If you update the demo to a newer three.js it should work again though.