Yup, same thing still happening with it on, or off.
Have you tried on our site (http://www.vapes.com) ?
We are running the latest version of the theme, with, the css applied that you guys provided to fix the woo short code.
If we disable all plugins, except woo and your theme, it still occurs :/
Again though, we are using our own thumbnail size instead of the ‘hard set’ sizes your theme desires.