Product overview and product detail are not working

The product overview and product detail are not working. When I go to the product overview [1], I see the message 'No results for "', see attached screenshot. Also, trying to view products from the CMS using the View button doesn't work. The View button is hidden for product documents. This could indicate that the sitemap for products is broken.

I've tested version 3.07.06 and products are still working in that version, so it seems that a commit in 3.07.07 has broken the functionality.

Please note that this functionality is broken in the live demo right now, so I'll create an issue to rollback the version of the demo to the previous version.

[1] http://www.demo.onehippo.com/products