Safari 6+ / CSS 3D Transforms / WebGL

Two of my OS X virtual machines (OS X 10.8 and 10.9) are experiencing graphical glitches and flickering in their Safari viewport when browsing sites that utilize CSS 3D Transforms and WebGL. Oddly enough, my OS X 10.7 VM with Safari 5 isn't experiencing the same issues. All three machines have the same hardware profiles—3GB RAM, 512MB VRAM—running on an iMac (3.4 GHz Core i7 with 20GB RAM).

Any thoughts/ideas why this might be the case?

Here's a URL that can illustrate the issue:
http://visitingmedia.com/site/the-pearl-studio/

Thanks in advance!

 

I just updated to Build 9.0.23140 and am still experiencing the same issues.

 

Probably related to the fact that there's no Hardware Acceleration on OS X Guests.

 

Huh. Well, then, that makes absolute perfect sense. Haha! Thanks!