I am using an adapted version of the V2 Book Type and am having trouble with the way the Author (in my case Artist) line displays when a product has more than one Author.

Here are two of my products for an example:

A single artist (this is how it should be)
Multiple artists (the attributes/add to cart box drops down the page)

If someone could take a look at it and at least help me figure out where to look for the cause, I'd really appreciate it. I'm not great at php and can't figure out if the problem is in the product_display template or CSS.

Thanks so much.