Jetpack comments not sized correctly

I’m afraid multiple Jetpack Comments cannot be added to the same page at the moment. It can create conflicts such as the ones you experience on your home page.

To avoid the issue, I would recommend that you load the comment template only on single pages and posts.

You can do so by removing the comments_template function from your home page template. You can have a look at the Twenty Twelve theme to find out more about the comments_template function.

In that case I’ll just turn off Jetpack Comments and look for comment plugins that work correctly.