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?
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.