threejs mesh missing triangle

Question

threejs is having some serious issues with some polygons

I'm on their site, viewing their examples.

On my computer, It starts out fine, like the first image below, but within a few seconds, becomes the mess in the second part of that image.

you can see that it works in your browser here

I've tried clearing my history, cache, cookies, anything I can think of. I've even switched Firefox from Chrome. nothing seems to work.

any ideas? is this a webgl issue?

Answer 1

This appears to be an AMD Catalyst driver issue. I uninstalled it and the issue was resolved. It's now using the default drivers. I'll update if I ever install new drivers, but for now I'm leaving it as is.