Try running your demo site through the Google validation tool:
You can clearly see a “breadcrumb” markup….
https://search.google.com/structured-data/testing-tool/u/0/#url=http%3A%2F%2Fkriesi.at%2Fthemes%2Fenfold%2F2014%2F04%2F28%2Fnew-electric-cars-are-getting-really-fast%2F

If anyone else is reading this, I found a solution: Disable the “Minify JS files automatically?“… Works fine now :)

Update: Ok, when I deactivated the Better WordPress Minify again, it worked.
So BWP seems to be the problem.

Since kriesi.at is also using BWP, it looks like they should be able to work together. Anything I need to do in order to make it work?

Anyone????

Ahh… Nevermind, I got it now.
The “name” and “email” is still listed above the boxes, and not inside. How do I change that?