PDF Export doesn't include styles from SSX objects

Steps to reproduce:

1. Import the 2 XARs attached to this issue
2. Export both pages in PDF format

For Main.test2.WebHome the custom style is included in the PDF, but for Main.test.WebHome the style isn't there.
The "test" page has a XWiki.StyleSheetExtension object attached to it, while the "test2" has the style rule included inside the content.