I went back to my notes. I had a solution for you, but you disappeared from my list. So here's what I found out:
1) Your theme uses a different template for the Home page than it does for all other pages.
2) The templates are not consistent in the formatting, that's why you're having a problem.
3) I attached a screen shot that highlights what the differences are for the portion of the templates that are causing you the problem. The one on the left is the Home page and the one on the right is the About page.
4) The easiest thing to do would be to edit the Home page template to make it consistent with the other pages. Or you could leave it the way you have it, and know that it will only be a problem with the Home page, never with any of the other pages.
5) Perhaps you could send a note to the author of the theme, explain the problem you're having and ask them to fix it in their next update?
So that's where it stands. I'm really sorry for the confusion. I had done all the research and had an answer but you weren't there anymore.
Please let me know if I can provide you with more information or if you have questions about what I've outlined above.