Comments inside fb: full Board: visible connection

Hey

I'm having trouble putting a tag fb: comments in full Board: tag visible connection. It seems that the comment could not load completely. Here's my example code:





You can display the result in http://www.facebook.com/pages/Code-Rubik/168028515418?v=app_7146470109:

When you remove the tag is visible, it works correctly. I tried to change the version of the tag fb: fbml, remove it completely, but it does not change anything.

Does anyone know about this bug?